i have the GMPP Performance Exhaust which i beleive is 2.25. so my question is what header and down pipe can i use with the Gm Exhasut and not have to do any cutting to the down pipe. no matter the price postem up

 

i thought the gm performance exhaust is 2.5 inch cuz then i would pick up the cobalt addiction 2.5 downpipe and header cuz i dont think or even know where to get a 2.25 downpipe or header i would be screwed now. hmmm ill have to check into that.

also the header from CA is 280 with tax. and the downpipe is 280 with tax

ryan.

 

im pretty sure its 2.25. but im not sure. looking for more info. post what you know

also on CA it says it is 2 1/4.

 

The GM exhaust is 2.25. The Vibrant header and downpipe should bolt right up.

 

well im for sure getting the gm sport exhaust or whatever. if thats 2.25 then will the CA header bolt up to the Downpipe from them cuz there downpipe is only 2.5 or 3 correct. thats what i read. so how will that work 2.5 downpipe in between header and exhaust that are both 2.25 hmmm unless the header has a 2.25 outlet aswell. does anyone know how or were to get a downpipe that will bolt up to the gm exhaust and CA header.


ryan.