my mufflar is starting to rust through and leak (gonna need one by next inspection) so i thought it would be a perfect time for a cat back exhaust upgrade, but i've looked on a few websites and can not find any listings for a 99 bonneville sle, id liked to avoid and mufflar shops because i can do any work myself cause i work in a garage and i have access to a lift , tourches, welder...ect...does anyone have any suggestions on where i can order custom exhaust online, or even autopart stores...thanks in advance

There are no cat-back kits.

Order your components from www.justmagnaflow.com, and I strongly suggest you keep the stock 2.5" Mandrel-bent stainless steel piping and your resonator.

The muffler won't add performance. Only sound. But a high-flow cat would benefit you.

should i get the.racing cat with a 2 1/2 inch inlet/outlet, also what type of mufflar should i get that would fit in the best...then only exhaust work i have done is replacing factory parts, so i'm new to aftermarket stuff

You have the SSEi outlets in the rear bumper, so you want a Magnaflow crossflow muffler with 2.5" inlet and dual 2.5" outlets. Inlet and one outlet on one side, outlet on the other side. You want the F-body (Camaro/Firebird etc) muffler. It'* the same setup as ours.

2.5" cat is fine. Remember that you need the O2 bung.

so this mufflar will work

http://www.justmagnaflow.com/cgi-bin/shopper.exe


and this converter

http://www.justmagnaflow.com/cgi-bin...&key=CARK14106


and this o2 bushing?

http://www.justmagnaflow.com/cgi-bin...key=CARM100016


if thats all correct and the rest of my tubing is in good condition then i can do this for around $300 and a few hours after work...way cheaper then i thought an aftermarket exhaust would be, i also priced out a factory replacement from napa and it was much more...thanks for all the help and i'll post when i complete it[/url]