I've searched for this a bunch but no real answers. Pypes sells a dual exhaust kit for like 300+ with out mufflers but couldnt you just use pypes xpipe and gt over axles to connect to gt mufflers? I know you need two more exhaust hangers for like 50 bucks but the xpipe goes for around 90. I figure the distance from the x pipe back has to be same v-6 or gt? has anybody tried this? I also know pypes x pipe is adifferent part number for v-6 than gt but figure that is the spacing off the cats?
Im fairly certain that this will not work, just has to do with some minor differences, I got mine custom made true dual by a local shop alot cheaper, just go out to some non chain exhaust mechanic and let him take a look
mustang v6, s&b intake, with painted cover flowmaster, 16x7 in front 17x9 in back,with 2 inch drop in the front, costume paint on rims, black grill, with gt fog lights with angel lights, and running mustang, smoked headlights, with headlight splitters, smoked out turning lights, racing stripes, blackout trunk kit, all new audio system, 4 jl audio 5x7 speakers front and back 2 jl 12 inch w6v2 with 2 jl 500/1 amps and pa system 1967 mustang working on
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I have a pypes X pipe with a GT takeoff dual exh, fits just fine and your right you will need 2 additional exh brackets at the back, all 4 bracket are the same and they are about 50 apiece, I found a GT takeoff on Ebay for $80 with all 4 brackets the brackets is all I really wanted, I already had a magnaflow duals with one bracket on each side. I took the whole exh off and replaced it with the takeoff.
did more research and a gt x pipe wont work as the v-6 exhaust is smaller up from buy walker through dynomax makes an x pipe that works with the gt driverside pipe or you could use a gt x or h pipe and weld in reducers on the motor side I have an extra set of gt exhaust hangers for sale if somebody is interested. just enough for one side you can use your stock v-6s on the pass side.
v-6 dual exhaust with gt take off parts 
