Far as non-emissions long tubes you have a few choices MAKING cheap header for another application fit, possible some banging or grinding on the car or headers needed as well as custom exhaust hookup. MrBuick can offer some insight there.
I know most folks will BLINDLY tell you how wonderful Clear Image Automotive headers are but my experience and close friend's has been overpriced,6 month wait, mediocre fit, bad coating, cracked primarieS, and mild steel flanges on $400+ stainless cats. On other forums any naysayers get personally attacked by the faithful. Actually a very common way for vendors to maintain a reputation they don't deserve.
The first set of CIA headers I bought were the CIA "Budget" 4-1 headers. I waited over 6 months for them. It took so long, that I totaled the car the week they got here, and never ended up putting them on. Tried to put them on my next car, which was a Roadmaster, and they refused to clear. On BOTH sides. Drivers side hit the steering shaft, pass side hit the frame rail in the exact same spot as the Flowtech Afterburners. I ended up tradding them in to CIA for the set of Tri-y's, I said I would never buy. They were used, but one of them had a cracked primary, so one was new, one was used. I got more money for the Budget headers in credit, than I had paid for them, since I got a cash discount. The price of the Tri-y's was much less than a new set, so I gave the coated headers a shot. I was told I had a 1 year left on the original coating warranty. So... put them on, and 6 months later, the NEW headers was rusting through the coating. The used side looked horrible. It had tiny rust pitts all over the top of the primary's. My 7 year old Flowtechs didn't suffer from rust like this! Told CIA I wanted the coating warrantied, and they told me they don't warranty used headers. That really pissed me off. I had them coated locally by a friend, then sold them off.
I replaced them with a set of the G9001 Summit headers. More on that later.
The Roadmaste I have now, came with a set of the CIA Tri-Y headers. These have the satin coating, which seems to hold up much better. 5+ years old, and they still look decent. However, the primary tube is cracked on one of them almost all the way around the tube. When I told them about it, they did send me $30 to have it welded up at a shop. CIA blames it on people not hooking up the exhaust mount at the tranny. Really, it's just a stupid ass place for a butt joint on a set of headers.
There are a few cheap long tube options. The G9001 summit headers, you have to cut out the frame braces. On 93 and older models, this brace was bolted in. It's welded on these. They also hit the A/C lines, so they have to be bent out of the way. They are a bitch to get in there . you need the car up HIGH, and have to really work to get them in from the bottom. I never 100% got them in due to time constraints. I was forced to just put manifolds back on that car. Then it was demoted to winter beater, so I never messed with it again. The Flowtech Afterburner 49001 headers is decent. Driver side has no issues. Pass side, they sometimes hit the frame rail. The header was beat on with a hammer to clear the frame on my 96 9C1. The headers were on it when I got the car. Even then, they were a "C" Hair from hitting the frame.
Here is a thread with some options. I really need to update it, but I'm lazy and don't really care about that forum these days.