i have a 98 grand prix. im redoing the back end of my car and the exhaust. what size is the f-body exhaust. i meant the lenth/with/height of the muffler, and the distance between the tips. im upgrading to a 2.5 exhaust and would rather throw a stock f muffler or a flowmaster than spend $700 on a cat back.
thanks

 

You can go to flowmaster's website and they will tell you the dementions of their mufflers and you can pick which one fits you best.

www.Flowmastermufflers.com

 

700 for a cat back? man what cat backs are you lookin at? corsa? you can get a nice catback for like 250. open a jegs catolog and browse. the top of the line exausts run that much. like corsa and borla because of the warrenty

i didnt notice you had a grandprix. the f body mufflers are not like your stockers...i believe your stockers are round and you have a res under there too. get like a dynomax round tube or something