My 85 has a stock 350, Flowtech after-burner headers, 2.25" pipe, glass-packs (I can't remember how long, maybe 18"), & it all runs out the back thru 4"x24" tips
Oh, and it's a true dual setup (no crossover pipe)
It's nowhere near loud enough for me
I haven't decided for sure, but I'm prolly gonna run 3" with flows, spintechs, or somethin on my 67
Whatever I run it's gonna be loud
