you're gonna have hood clearance issues with another b-series motor. do some searching. also, someone was saying that the motor tilts in the lude, and the other b-series motors don't like that? d-series motors use the same motor mounts and b-series, but not the same trannies. so you'd need a d-series motor/tranny combo. i wouldn't reccomend that because the car will be sllooooowwwwww.