I need a new exhaust bad and was looking at ZZP's 3" catback with there 3" catless DP. Is anyone using there exhaust or do you guys know if it will fit the GXP?

 

http://shop.zzperformance.com/store/...Downpipes.aspx

This is the downpipe ZZP makes for the LS4 and it fits all of them. It was in the bolt on parts sticky. Can't speak on it because I do not have one.

 

i thought they were different from the 3800 to the 5.3

 

It will work with slight modification. However it necks down to 2.25" at the split which is why I didn't buy it. If you do decide to get it however I do have a brand new ZZP 3" catless down pipe for sale.

 

What modification are needed to make it fit.

 

Maybe this is of interest:
http://www.magnaflow.com/02catalytic...irectfit=49225

no mods needed O2 still fits and lifetime warranty, free shipping and its a high flo cat.

 

One of the hangers is in a different location I believe. The reason I didn't get it was because I wanted to use my Magnaflow mufflers which were 2.5" and the ZZP system is 2.25". If you get their catback with mufflers I don't think it would be that hard at all to install.

 

Thanks for finding that. I actually have my rear o2 disabled.

Sweet thanks. If I remember right isn't it the hanger just after the y?

 

I believe so, if you look at their catback, it doesn't split uniformally. It has one short pipe (passenger side) and one long pipe (driver's side) after the Y.

 

well I have the 07 Monte SS and I installed the SLP exhaust from their website. The exhaust appears to be exactly like the 00-05 set up, and guess what? It fits perfectly!! no fab ups or anything!!

 

http://www.slponline.com/view_produc...M&BIG=31040M-1 this one? and how do you like it? what's it sound like with dod and stuff?