I'm going to replace my 91 RS's stock Cat with a Dynomax Super Converter. It didn't come with any nuts or bolts so I guess I have to go out and buy them. SO..which ones should I get? Also, my stock nuts and bolts are pretty rusted together. Do I have to cut them off or can I just get some kinda "rust be gone" stuff??

 

I ordered and will be adding a C & L Performance cat with SLP headers very soon.

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

 

To get those rusted bolts use a good penetrating fluid. The rust is only on the surface and it doesn't necessarily indicate that the threads are rusted. If the wrench has a good fit then they should come out with some effort of course. As far as the bolts go, any carbon steel bolts will do as long as you use an "Anti-Seize" compound on the threads. But if you don't want them to rust then use stainless steel bolts with Anti-Seize on the threads also.