If one was to take a 1968 Fastback with the stock motor, and money wasn't an issue, and he/she modded the crap out of the car, forged the internals, did everything money can do to the car, except change the motor, then did everything money can buy the a Bullitt, i.e. forge the internals as well, and pretty much mod the crap out of it, which would be the better engine? Lets assume no other factors, just raw power, which engine would come out stronger after all the mods? Also, generally speaking, which would be a better motor to mod, a top of the line motor from back in the day, say, a Hemi, or like a 440 block, vs a current motor? I hope you understand my question. Pretty much, it's two questions. One for the '68 motor vs the Bullitt motor, then the other question being classic motor vs current (near top of the line) motor. The main reason I ask is because I saw a video of a 1968(?) Charger with 950 HP N/A.