REPU_74

iTrader: (12)

i was actually thinking of running an aftermarket cat converter to decrease some of the annoying loudness from my exhaust.i plan on running a header,cat converter & 2.5 round magnaflow muffler for my 75 repu,which actually has no need for a cat because its smog exempt.i just want to see if its worth the install to save me the hassle from cops and what not....btw it will also be running a 48 ida weber!

2GSLSE

iTrader: (6)

I don't know if it will hurt your repu very much since its N/A but I have a cat on my single turbo FD(396hp @14psi). it is one of the smaller metallic types but it didn't help with noise much on my car but I will be using another one on my next car since it does help keep my car cleaner since my car is silver its noticeable

diabolical1

iTrader: (3)

if it's noise you want to combat, then why wouldn't you just run a presilencer of some sort?

REPU_74

iTrader: (12)

that is also another option i was looking at,either some type of str8 thru resonator or just simply adding one or two extra mufflers...