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:
Sisu S-321
Table title:
Production figures of the pre-series and first serial units
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Production batch </th><th colspan=3 rowspan=1 > Used Volvo chassis </th><th colspan=3 rowspan=1 > Produced Sisu models </th><th colspan=1 rowspan=2 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > LV-66 </td><td colspan=1 rowspan=1 > LV-71 </td><td class="highlighted"  colspan=1 rowspan=1 > LV-72 </td><td colspan=1 rowspan=1 > S-321 </td><td colspan=1 rowspan=1 > S-322 </td><td colspan=1 rowspan=1 > S-323 </td></tr>
<tr> <td colspan=1 rowspan=1 > pre </td><td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > 1×E </td><td colspan=1 rowspan=1 > 1×D </td><td colspan=1 rowspan=1 > 1×E lorry </td><td colspan=1 rowspan=1 > 1×D bus </td><td colspan=1 rowspan=1 > 7 lorries </td><td colspan=1 rowspan=1 > Production started 1931, finished 1932. </td></tr>
<tr> <td colspan=1 rowspan=1 > I </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 3×E; 3×D </td><td colspan=1 rowspan=1 > 2×E; 2×D </td><td colspan=1 rowspan=1 > 5 lorries </td><td colspan=1 rowspan=1 > 2 lorries, 2 buses </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1 chassis used for parts. Production started 22 February 1933, finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > II </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 3×E; 3×D </td><td class="highlighted"  colspan=1 rowspan=1 > 1×E; 3×D </td><td colspan=1 rowspan=1 > 4×E; 1×D </td><td colspan=1 rowspan=1 > 5×D; 1 lorry, 2 buses and 2 combination buses </td><td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > One S-322D was afterwards converted S-321E and equipped with combination bus coach. Production started 5 April 1933, finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > III </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 5×E; 1×D </td><td colspan=1 rowspan=1 > 4×D </td><td colspan=1 rowspan=1 > 5×E </td><td colspan=1 rowspan=1 > 5×D </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Production started and finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > IV </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 2×E; 4×D </td><td colspan=1 rowspan=1 > 4×D </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Five S-321's are built on Crichton-Vulcan frame. Production started 20 June 1933, finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > V </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 3×E; 3×D </td><td colspan=1 rowspan=1 > 4×D </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Three frames from Crichton-Vulcan. Production started 4 August 1933, finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > VI </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 5×E </td><td colspan=1 rowspan=1 > 5×D </td><td colspan=1 rowspan=1 > 5×E </td><td colspan=1 rowspan=1 > 1×E; 4×D </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > All frames from Crichton-Vulcan. Production started and finished 1933. </td></tr>
<tr> <td colspan=1 rowspan=1 > VII </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 5×E </td><td colspan=1 rowspan=1 > 5×D </td><td colspan=1 rowspan=1 > 5×E </td><td colspan=1 rowspan=1 > 5×D </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > All frames from Crichton-Vulcan. Production started 2 March 1934, finished 1934. </td></tr>
</table>
Question:
Which model Volvo Chassis was later converted to include a bus coach and what was the original chassis?
Answer:
Sisu S-321E vehicle was S-322D with a bus coach; this was built on Volvo LV-72D chassis.