Its gonna take more than a used 302 with shit stock heads to beat a modded turbo DSM.
Some of those are really quick and run anywhere from 12's on down to 9's from what Ive seen at the track.
Youre looking at being a 14 second car with the parts youre looking at without spraying the shit out of it. My car ran 15's with a stock motor, stock gears, shorty headers and an Edelbrock Performer intake and even with AFR 165's, a custom ground cam, 4.10's and some other bolt ons it only ran 13.7.
I havent ran it with the new motor yet so I dont know where its at but now its far from stock.