That's why your question seemed a bit confusing...
Surely they could convert any engine to match the output of the LM. I think they've modified one car's engine to be even more powerful than the 680hp output of the LM.
The real trick would be to go for the LM-spec motor and keep the F1 road car's gearbox. Can you say "250 mph" ??
= = = = =
You might find this quote interesting:
"...but we talked with one of the mechanics who showed us a "high output" V12 going into a road car that was 740HP at the crank. It was the only one they would make."
Taken from here:
http://www.centralcoastweb.com/nsxb/...n/mclaren.html
>8^)
ER