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I'm going to keep my question short and to the point. I have a 1977 Oldsmobile vin R 350 with 3a heads. If I replace those heads with the early #5 heads (port, polished, divider weld, new valves, springs, etc) what would happen performance wise? I know about enlarging the head bolt holes...

Need a little help on backspacing on my 1983 Cutlass. Will a 18x9 rear with 5.25" backspacing work? I'm not sure on tire sizes but whatever is the biggest tire that will fit is what I would like. Perhaps a 275/35/18 in the rear (245/40/18 front). Thanks.

Hey guys, I need help selecting some aftermarket wheels for my 83 Cutlass Supreme. My Cutlass is black with a red interior. I'm not sure if I should do black wheels with a chrome/polished lip or chrome/polished wheels. I just would like to have some opinions on what wheels would look good. I...