I ran the copper head gaskets that came with my mac longtube headers for about 2 years on my old supercharged 302 and never had any problems... i would suspect that the copper gaskets with the sealing ring around the ports are the best choice. I think they are a little more expensive than other header gaskets but i never had any problems with mine.
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vortech s trim,edelbrock 6032's, b303, cobra intake, 70mm tb, pro m 75mm bullet, granatelli alum. rad., accel 330+ digital ign., msd boost tim. ret., 30# inj., 190 lph fuel pump, t-rex pump, bbk, press. reg., tremec tko, ram billet flywheel, dual friction clutch, pro 5.0 shifter, 4.10 gears, aluminum quadrant, motorsport alum. driveshaft, hooker headers, off road h pipe, flowmaster cat back, subframes, megabyte jr lowers, heavy duty uppers, eibach springs drag springs, koni sport shocks, polished cobra r's, 85-86 taillights, msd pro billet distributor
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