kissthis66

Looking to replace the header/manifold on the XJ with an APN. I want to run 2.5" exhaust but the header collector is only 2 1/4". Does anyone know of any aftermarket headers that have 2.5" collectors? i doubt it matters much, but just wanted to ask before I make my purchase.

andrewmp6

http://www.summitracing.com/parts/jb...model/cherokee

2001Classic

http://www.cliffordperformance.net/M...gory_Code=J258

solid price and superb quality with ceramic coating. It comes with separate outputs so you can run dual exhaust or run a custom pre-cat assembly/downpipe. They also sell a y-pipe if you plan to by-pass the pre-cats. I mated up a Walker pre-cat/downpipe assembly with it on mine after I cut off the walker flanges and welded on 3 point flanges to work with the clifford flanges. I am sure you have read it already but you might want upgrade motor mounts while at it as these usually are the culprits of manifold cracks

Here is another link to options

http://jeep4.0performance.4mg.com/exhaust.html

kissthis66

Thanks a lot for the links guys, really appreciate it! I really need to work on my Summit Racing search skills lol. And yup, already have the new motor mounts sitting in the garage waiting to be put on, going to tackle it all at once. Also in the process of gathering the parts for the 2000 intake manifold swap as well.

andrewmp6

I know summit well half of my mustang has came from them over the years lol.Its the only site i knew that would say a collector size most jeep ones don't.

Tom95YJ

Clifford is the only one that has a 2 1/2 " outlet at the collector, But with their design with the y Pipe you may hit the driveshaft, I know my front driveshaft hits my 2.5" downpipe I had made for my APN header But it only contacts when fully flexed on the drivers side