FAST class cars are required to run 2 1/2.....
And look how much power they make. Some run 130+mph Yes, but how much faster would they be w/ less restriction? A pro stocker would probably still run 7s or 8s in the 1/4 w/ 2.5" exhaust...does that mean 2.5" is plenty for an 800 hp motor? A 600" motor doesn't even need 3" exhaust???? Please.  If you don't mind it being a little louder (most in this hobby enjoy that) and think you'll be adding power in the future, it won't hurt a thing to go w/ 3" exhaust now.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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