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:
Lancia 2000
Table title:
Engine specifications
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Years </th><th colspan=1 rowspan=1 > Engine </th><th colspan=1 rowspan=1 > Fuel system </th><th colspan=1 rowspan=1 > Power </th><th colspan=1 rowspan=1 > Torque </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2000 </td><td colspan=1 rowspan=2 > 1969–74 </td><td class="highlighted"  colspan=1 rowspan=2 > 1991 cc Lancia OHV H4 </td><td class="highlighted"  colspan=1 rowspan=1 > twin-choke carburettor </td><td colspan=1 rowspan=1 > 115 PS DIN (85 kW; 113 hp) at 5,500 rpm </td><td colspan=1 rowspan=1 > 170 N⋅m (125 lb⋅ft) at 3,500 rpm </td></tr>
<tr> <td colspan=1 rowspan=1 > 2000 Iniezione </td><td class="highlighted"  colspan=1 rowspan=1 > Bosch fuel injection </td><td colspan=1 rowspan=1 > 125 PS DIN (92 kW; 123 hp) at 5,800 rpm </td><td colspan=1 rowspan=1 > 172 N⋅m (127 lb⋅ft) at 3,700 rpm </td></tr>
</table>
Question:
What engine was used in the 2000 model of the lancia 2000?
Answer:
The 2000 used the 1991 cc 4-cylinder boxer engine available in either carbureted form or with fuel-injection.