P71 vs. '05 GM GS - Horsepower question

[ogre]

oh i know that wont work, it's all 1 piece, mustangs have manifolds, h-pipe/catpipe, then catback. that's it.

Grand . . . sorry i'm spoiled, Mustangs have little to no fabrication needed till you start getting into the 11's or better. all my gt's i could just lay down the debit card, get a much better than stock part, put the car in the air and bolt everything together

[1987cp]

Odd ... it works pretty decently on 5.0 cars. Start with Mustang headers and crossover pipe and piece the rest together from off-the-shelf parts for various Chevys.