exhaust systems?

I have a 96 sonoma sls 4.3L vortec X type with manaul tranny, 2wd, it has the long bed reg cab, and i'm trying to find a dual, or dual catback exhaust system for it... All i can find is reg cab short bed system or ext cab short bed... Will the ext cab short bed system work for my reg cab long bed?... I would assume not... but I wouldn't know. Also is there any place that acually makes exhaust systems for reg cab long bed truck? Any websites out there... i've been looking around, gibson, flowmaster, magnaflow, none of them make a system for my truck set up. any ideas? thanks
Brandon

You don't really need to go out and buy and exhaust system you can make your own. I had a 94 s10 and I had 2" straight pipes back to 3" tips and it sounds pretty good. My friend has a 95 sonoma with glasspacks back to 2 1/2" tips and it also sounds good. Both trucks had high flow cats. But if you are looking for a muffler i say go with 40 series flowmaster, nice deep tone to it.