Any small block chevy heads will work with no problems. The only change is if u put 350 heads on a 400 then u need to drill steam holes. I wouldnt go too far with the 305 tbi as there performance potential is minimal but anyway good luck in your search.
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2005 PBM M6 Red interior GTO
-CNC ported LS6 heads, PAC Springs, HPE-C cam, SLP Under-drive pulley, 160 stat, Harland Sharp Rocker arms, Volant CAI, MSD Wires, Ported TB and Stage 2 Intake by Jeremy Formato, ARH 1 7/8 Long tubes and high flow cats, MagnaFlow CatBack, GMM race shifter, Pedders street 1 bushings, Textralia OZ700 clutch, Gforce Halfshafts
455RWHP/411RWTQ
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