Planning on running true duals on my SS clone, Im looking into Dynomax VTs, and maybe gutted cats... As of right now the truck is a bone stock 4.8L, Plans are 243 heads, ls6 cam, tune Long Tubes and 90mm Throttle body and intake.
The question is should I go 2.25" from the gutted cats back or 2.5" from the factory cats back?