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hello all! ok, i have a 69 nova with a 383 stroker with a .480 lift rv cam from comp cams and 10.0:1 compression. and a 4 speed. at the moment i have headers on it that have 1 5/8 tube headers that go into 3 inch collectors. the exhaust is a 2 1/2 with flowmaster 40s. one reason of change is the headers were coated and have completely rusted up. not cool! i desided on stainless works headers but i dont know what size to run the same 1 5/8, 1 3/4, or 1 7/8? next is what size exhaust tubes should i go with? i wanna dump it right after the mufflers before the axle. last question is i love the flowmaster sound but the 40 just isnt loud enough for me. waht would be louder but yet still have the flowmaster sound? maybe the 10 series? thanks, al.