If you're looking for REALLY inexpensive exhaust, I'd suggest buying mufflers, then shopping around for someone to custom fabricate pipes. I don't know about Missouri, but here in San Antonio there are A LOT of small, independently owned shops, that will do just about anything real cheap. Just don't complain about not having a warranty for the parts and labor.
I'd suggest the GT take-offs, then buying some different mufflers. Entire kits generally start about $150. Here are some links;
http://www.3.8mustang.com/performanc...istcat=Exhaust
This link is for mufflers only
http://www.3.8mustang.com/performanc...stcat=Mufflers
On the V6 Tech main page, at the top of the forums, there is a thread for performance products/site. Check there for more brands and prices.
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2008 Mustang GT Premium 5 speed, 3.55 gears, black-on-black, IUP, 18in polished aluminum wheels, FRPP GTA Axle Backs, JLT II CAI w/SCT X-Cal 2. 296HP & 311TQ
"Some people live their entire lifetime and wonder if they ever made a difference to the world. Marines don't have that problem." -- Ronald Reagan