I have a 95 HB with a usdm GSR motor stock header what length cat do I need??

 

bump. Anyone?

 

Most people I know just extend the cat piping 4 inches and be done with it.

 

that or you can use the stock integra cat thats what I used on my EG and it fit perfect but like what sleepciv said most people just extend them thats what I did on my friends Sol for his LS swap

 

depends on what year your gsr engine is. they are different ones. i know 94 -95 gsr have no o2sensor on header but have it on the cat. the 96 has 2 o2 sensors on cat. they come in different length. My suggestion is to bolt on the stocck cat to the header and take it to a muffler shop to extend the piping with flange.

 

I have no stock cat if I did I would not be posting this question.