Rmf header

I have 92 gsr and want to put a rmf header on it. I want to use a cat on it. what size do I get and do I get one for my car or for a gs. any help please.

You’ll have to go custom as there will not be an off the shelf cat which will fit that header and your exhaust. You can go to an exhaust shop and have them figure it all out for you based on your budget. Or find a cat that you like and take it to the shop so they can weld it all up for you. If you have a preference make sure you tell them (brand, flange style…etc), exhaust shops have a tendency to do everything quick and dirty unless you tell them you want it done a certain way.

delete. double post.