MAC Exhaust

Thinking about running MAC Lt's 1 3/4" for 3" Power Chamber, MAC Pro Chamber 3", and MAC Pro Dumps 3" on a heavily modded 5.0 (EFI Victor, Vic jr heads, 10.5:1, Trick Flow stage III cam, .030 over, ect.) What do you think? Too loud? Not enough back pressure? With TKO T5 should be pushing about 463rwhp so I dont think that 3" is too excessive, but I'm not positive. Would 2.5 be better?

i think the 3' would work fine.... i think its sounds like a good system...ive heard some clips of the mac w/ the pro. and i liked it alot...its also cool cuz not alot of people run macs on the stangs...i say go for it

I actually really really like the sound of MAC mufflers, since having them opn my new car.