A.S.A.P. - In/Out Size of Catalytic Converter:

[Sin_Cere]

I just ordered a Magnaflow catback and Catalytic Converter. I ordered a 3" in and out for the Cat. Was that the right size to purchase? I'm sure I can call by tomorrow morning to change my order if someone replies and tells me otherwise. My headers are stock.

1994 Trans Am GT

Thanks...

[AmericanZ28]

The stock size of the exhaust is 2.75" I would keep the 3" though as it will allow you to hook it up directly to an aftermarket cat-back. Plus the adittional quarter inch will flow more. If it doesn't fit, it wont be nothing major that a muffler shop cant fix in 5 minutes.

[fastTa]

They might have to flare the stock pipe a little, but most exhaust shops have pipe expanders so it's no big deal;.