Plus elevntybillion: ^^^
In addition, there is no space for the radiator+condenser+fans. At least one of the conversions had the condenser relocated roughly behind the fog lights (split into twin condensers, I think). This allowed a bit of room to push the radiator forward. Ideally you'd try to move the M120 backwards into the firewall but there will be different limits there.
I'd prefer to see an M159/M159 conversion, or supercharged M119, or something along those lines capable of ±600bhp. It may not sound as pretty as a V12 but the overall performance, cost, and reliability should be improved.
@jhodg5ck - any comments on this endeavor?