sounds like a good time to turn this into a weekend bruiser and track star.......no way it will be able to like a DD...find a beater and use it as the daily means of transportation.....if you stick a small cam into that block with those heads it will suck on the street.....if yu want a DD then pull the heads off, find a set of iron GM castings 1.94-1.5 valves and stick a small cam in it......mismatched parts will only prove to be terrible performer. Or do what i suggested ......buy a beater and build the shit out of this motor.