best machine shop/porter for 340 j heads

when i had tis combo i was running mid 12's consistanly and completely streetable 340 bored 30,factory steel crank, i beam rods, srp pistons, j heads i ported myself,rpm airgap, carb shop carb, 507-510 hydalic extreme energy comp cam, 3500-3800 convertor, 904 trans with low gears in it, 3.55 gears, compression about 10.1, full wieght 74 duster no fiberglass or racing seats, if you want 11's i put a 125 shot of nos on it and went 11.4o's all day and still streetable. just a combo i had run in the past, thought it may be of some help , good luck :toothy7: