Funny coincidence, I just started the same project last night on my 92' SE. On mine it looks like there are studs in both the manifold and the cat with nuts holding the Y-pipe on. Surprisingly most of the bolts holding the 3 heat shields on came out without much trouble (only 1 broke off). The nuts and studs in the manifold look to be pretty solid but the two in the cat are looking pretty sad. You need a 14mm deep socket to get them off that I didn't have so I will have to get one today. If the studs in the cat break I will probably remove it from the muffler side as well just to get it off the car and drill out the studs on a bench. I bought the pipe from a car part wholesaler on e-bay (Item number: 250300721328 ~ @$125 shipped) but I had to buy the gaskets from another online auto parts store (<$10). It was a little confusing because you need 2 of the same for the manifold side and the description indicated you get a set but as it turned out I needed to buy qty 2. Oh well, extra shipping. One other note, the Bosal y-pipe from e-bay is not an exact fit. The cat side flange on the original one had extensions for the hangers, this one is just a flange, so I will have to craft up a hanger. Guess that may be why it was half what other websites wanted???