I also live in S. Cal. I need to replace my Cat and muffler. I was wondering what you were going to use?
After some research on other members pages I've concluded it is not a bad idea (and cheaper too) to stick w/ the stock manifolds and 2.5" pipes. However a high flow cat and high flow muffler are difinately the way I want to go. Bob Barrys' pages list a high flow Random Technologies Cat and a Flowmaster big block 70 series muffler (the quietest of the flowmasters-which is what I want. I've got tons of neighbors who sleep w/ their windows open). What brands/models of components were you planning on using? I also figure I should get it SMOGed afterwards to make sure they didn't use a lower capacity cat.
I'm about to start looking for a shop to do the work, any recomendations here in S. Cal (Los Angeles-Hollywood area)?
'91 GW "The Swank Tank"