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:
Pontiac 2+2
Table title:
1965-67
Table:
<table id='hittask' contenteditable='False'>
<tr> <td colspan=1 rowspan=1 > Model year </td><td colspan=1 rowspan=1 > Engine name </td><td colspan=1 rowspan=1 > Displacement </td><td colspan=1 rowspan=1 > Carburetor series (bbl) </td><td colspan=1 rowspan=1 > Output @ rpm </td><td colspan=1 rowspan=1 > Torque @ rpm </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1965-66 </td><td class="highlighted"  colspan=1 rowspan=1 > 2+2 V8 </td><td class="highlighted"  colspan=1 rowspan=1 > 421 cu in (6.9 L) </td><td colspan=1 rowspan=1 > Carter C4-AFB (4) </td><td colspan=1 rowspan=1 > 338 hp (252 kW; 343 PS) @ 4600 </td><td colspan=1 rowspan=1 > 459 lb⋅ft (622 N⋅m) @ 2800 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1965-66 </td><td class="highlighted"  colspan=1 rowspan=1 > 2+2 V8 </td><td class="highlighted"  colspan=1 rowspan=1 > 421 cu in (6.9 L) </td><td colspan=1 rowspan=1 > Rochester 2-G (2) x3 </td><td colspan=1 rowspan=1 > 356 hp (265 kW; 361 PS) @ 4800 </td><td colspan=1 rowspan=1 > 459 lb⋅ft (622 N⋅m) @ 3200 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1965-66 </td><td class="highlighted"  colspan=1 rowspan=1 > 2+2 HO V8 </td><td class="highlighted"  colspan=1 rowspan=1 > 421 cu in (6.9 L) </td><td colspan=1 rowspan=1 > Rochester 2-G (2) x3 </td><td colspan=1 rowspan=1 > 376 hp (280 kW; 381 PS) @ 5000 </td><td colspan=1 rowspan=1 > 461 lb⋅ft (625 N⋅m) @ 3600 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1967 </td><td colspan=1 rowspan=1 > 2+2 V8 </td><td class="highlighted"  colspan=1 rowspan=1 > 428 cu in (7.0 L) </td><td colspan=1 rowspan=1 > Rochester Q-Jet (4) </td><td colspan=1 rowspan=1 > 360 hp (268 kW; 365 PS) @ 4600 </td><td colspan=1 rowspan=1 > 472 lb⋅ft (640 N⋅m) @ 2800 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1967 </td><td colspan=1 rowspan=1 > 2+2 HO V8 </td><td class="highlighted"  colspan=1 rowspan=1 > 428 cu in (7.0 L) </td><td colspan=1 rowspan=1 > Rochester Q-Jet (4) </td><td colspan=1 rowspan=1 > 376 hp (280 kW; 381 PS) @ 5100 </td><td colspan=1 rowspan=1 > 465 lb⋅ft (630 N⋅m) </td></tr>
</table>
Question:
When was the V8 displacement bumped up to the 428 cu ?
Answer:
In 1965, the V8 displacement was 421 cu in (6.9 L) and was bumped up to the 428 cu in 1967.