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Re: Question about exhaust tail pipe size.
if i recall, the 2x4 was a dual exit, the 4x4 was single ( generally see the Z71 with a single pipe)...but i also recall that being a model year item also
honestly, it is probably more your preference...i am currently re fabbing mine from header back, going to go with a true 2.5" pipe through the muffler area... (solid 400 hp small block)
then seeing what i can truly do with a 4 link and rear cantilever, the pan hard bar and rear cantilever travels eats a lot of possibilities
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