I saw something neat the other day in JC Whitney. They have T304 stainless steel exhaust tubing in different length strait sections, the same tubing in 3 or 4 different mandrel bends, and SS conectors(looks like a clamp) that will allow you to clamp without making one end larger. Looked real promising to me. You could do it for probably less than $200 in materials. Just remember to get an exhaust tubing cutter from JC Whitney too(they were around $20), and order each length of strait tubing a little too long and cut to length. Sounds neat to me. You should be able to hang the exhaust from the bolts on the connectors. The only thing that I didn't see that you would need was a stainless steel collector(I am sure that someone makes them). That would probably be the only thing you would have to get welded, too.
Jason
----------------
[]llll[] '90 YJ & '88 Grand Waggie