Could have been one (it'd be hard to know if it was a startech unless you knew about them). He told me it sounded like a V8 as they floored it out of the parking lot he was in. Although the 3.2 does sound awesome, it would be hard to confuse with a V8 unless you aren't big with cars.
LugNut, I was thinking the same thing. If I ever did a V8 conversion, I'd go with an older carb'd motor and replace all of the MB wiring with the old stuff. Sure it wouldn't be pretty, but you wouldn't have to deal with the computer going sentient and trying to blow itself up.