You just described my cousin. He is saving up to buy a E36 318is and he wants to put an LPG system so it will be cheap to run...what's the point of having a BMW coupe that will get overtaken by Dacias.
Well, I did specify that he wants the E36. Over the years, and with the LPG installed...I reckon it would have about 80-90whp.
*Haven't read anything besides the op*
Did you just say that your friend is buying a muscle car, but doesn't care about power? Does he have any idea where the term "Muscle" in muscle car comes from?
I guess he's into the retro-american-look of the cars, he's an older guy, so he doesn't care much about the performance, he's not about to race anyone on ( our bumpy, potholed ) street, and we don't have any racetracks,
so, some V8 or tuned version wouldn't get any real use.
It was a political experiment brought about by clever lobbyists from Ford, who dribbled away politicians with fantasy ideas. I hate E85 with all my heart.