Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Street & Racing Technology
Table title:
Previous vehicles
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Vehicle </th><th colspan=1 rowspan=1 > Model Years </th><th colspan=1 rowspan=1 > Type </th><th colspan=1 rowspan=1 > Engine </th><th colspan=1 rowspan=1 > Power </th><th colspan=1 rowspan=1 > 0–60 mph (0–97 km/h) </th><th colspan=1 rowspan=1 > Quarter Mile </th></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Neon SRT-4 </td><td colspan=1 rowspan=1 > 2003-2005 </td><td colspan=1 rowspan=2 > SRT-4 </td><td colspan=1 rowspan=1 > 2.4-liter turbocharged Inline-4 </td><td colspan=1 rowspan=1 > 215 hp (160 kW; 218 PS) ('03) 230 hp (172 kW; 233 PS) ('04-05) </td><td colspan=1 rowspan=1 > 5.6 seconds ('03) 5.3 seconds ('04-05) </td><td colspan=1 rowspan=1 > 14.2 seconds ('03) 13.9 seconds ('04-05) </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Caliber SRT-4 </td><td colspan=1 rowspan=1 > 2008-2009 </td><td colspan=1 rowspan=1 > 2.4-liter turbocharged World Inline-4 </td><td colspan=1 rowspan=1 > 285 hp (213 kW; 289 PS) </td><td colspan=1 rowspan=1 > 6.2 seconds </td><td colspan=1 rowspan=1 > 14.6 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Chrysler Crossfire SRT-6 </td><td colspan=1 rowspan=1 > 2005-2006 </td><td colspan=1 rowspan=1 > SRT-6 </td><td colspan=1 rowspan=1 > 3.2-liter Mercedes-AMG M112 V6 </td><td colspan=1 rowspan=1 > 350 hp (261 kW; 355 PS) </td><td colspan=1 rowspan=1 > 4.8 seconds </td><td colspan=1 rowspan=1 > 12.8 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Chrysler 300C SRT-8 (first generation) </td><td colspan=1 rowspan=1 > 2005-2010 </td><td colspan=1 rowspan=8 > SRT-8 </td><td colspan=1 rowspan=4 > 6.1-liter naturally aspirated HEMI V8 </td><td colspan=1 rowspan=3 > 425 hp (317 kW; 431 PS) </td><td colspan=1 rowspan=1 > 4.7 seconds </td><td colspan=1 rowspan=1 > 13.2 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Magnum SRT-8 </td><td colspan=1 rowspan=1 > 2005-2008 </td><td colspan=1 rowspan=1 > 5.6 seconds </td><td colspan=1 rowspan=1 > 13.7 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Charger SRT-8 (first generation LX) </td><td colspan=1 rowspan=2 > 2006-2010 </td><td colspan=1 rowspan=1 > 5.4 seconds </td><td colspan=1 rowspan=2 > 13.5 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Jeep Grand Cherokee SRT-8 (third generation WK) </td><td colspan=1 rowspan=1 > 420 hp (313 kW; 426 PS) </td><td colspan=1 rowspan=1 > 5.2 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Challenger SRT-8 (before facelift) </td><td colspan=1 rowspan=1 > 2008-2014 </td><td colspan=1 rowspan=1 > 6.1-liter naturally aspirated V8 ('08-10) 6.4-liter naturally aspirated V8 ('11-14) </td><td colspan=1 rowspan=1 > 425 hp (317 kW; 431 PS) 470 hp (350 kW; 480 PS) </td><td colspan=1 rowspan=1 > 5.3 seconds ('08-10) 4.5 seconds ('11-14) </td><td colspan=1 rowspan=1 > 13.6 seconds ('08-10) 12.9 seconds ('11-14) </td></tr>
<tr> <td colspan=1 rowspan=1 > Chrysler 300 SRT-8 (second generation, US version) </td><td colspan=1 rowspan=1 > 2011-2015 </td><td colspan=1 rowspan=3 > 6.4-liter naturally aspirated Apache HEMI V8 </td><td colspan=1 rowspan=3 > 470 hp (350 kW; 477 PS) </td><td colspan=1 rowspan=1 > 4.0 seconds </td><td colspan=1 rowspan=1 > -- </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Charger SRT-8 (second generation LD, before facelift) </td><td colspan=1 rowspan=1 > 2012-2014 </td><td colspan=1 rowspan=1 > 4.6 seconds </td><td colspan=1 rowspan=1 > 12.8 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Jeep Grand Cherokee SRT-8 (fourth generation WK2, before facelift) </td><td colspan=1 rowspan=1 > 2012-2013 </td><td colspan=1 rowspan=1 > 4.6 seconds </td><td colspan=1 rowspan=1 > 13.3 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Viper SRT-10 (third generation ZB I) </td><td colspan=1 rowspan=1 > 2003-2007 </td><td colspan=1 rowspan=3 > SRT-10 </td><td colspan=1 rowspan=2 > 8.3-liter naturally aspirated Viper V10 </td><td class="highlighted"  colspan=1 rowspan=2 > 500 hp (373 kW; 507 PS) </td><td colspan=1 rowspan=1 > 3.7 seconds </td><td colspan=1 rowspan=1 > 11.7 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Ram SRT-10 </td><td colspan=1 rowspan=1 > 2004-2006 </td><td colspan=1 rowspan=1 > 5.4 seconds </td><td colspan=1 rowspan=1 > 13.8 seconds </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Dodge Viper SRT-10 (fourth generation ZB II) </td><td colspan=1 rowspan=1 > 2008-2010 </td><td class="highlighted"  colspan=1 rowspan=2 > 8.4-liter naturally aspirated Viper V10 </td><td class="highlighted"  colspan=1 rowspan=1 > 600 hp (447 kW; 608 PS) </td><td colspan=1 rowspan=1 > 3.8 seconds </td><td colspan=1 rowspan=1 > 10.9 seconds </td></tr>
<tr> <td colspan=1 rowspan=1 > Dodge Viper SRT </td><td colspan=1 rowspan=1 > 2013-2017 </td><td colspan=1 rowspan=1 > SRT </td><td colspan=1 rowspan=1 > 640 hp (477 kW; 649 PS) ('12-14) 645 hp (481 kW; 654 PS) ('15-17) </td><td colspan=1 rowspan=1 > 3.5 seconds </td><td colspan=1 rowspan=1 > 11.5 seconds </td></tr>
</table>
Question:
What describes the second unit of Dodge Viper SRT-10 (fourth generation ZB II)?
Answer:
The second unit of Dodge Viper SRT-10 (fourth generation ZB II) is a 8.4-liter naturally aspirated Viper V10, which increased the power output to 600 hp (447 kW; 608 PS).