i actually got the whole setup at a local muffler shop here in fremont. i compared prices on websites like american muscle, v6 mustangstuff, cal-mustang, and then i started to call local shops to see what they had. for the whole setup it was really cheap compared to if i got my setup online and i still got great quality.
the gt takeoff bumper i did get offline at v6mustangstuff.com for $150
then the whole true-dual conversion cost a total of $526 which included the H-pipe, the extra piping parts, labor, etc, the mufflers and the magnaflow tips as well. it did take a lot of time for them to do, surprisingly. i was expecting an hour and a half to 2 hours tops, but my mom had left me there to wait cuz she had work, and i ended up waiting at the shop for 3 hours watching them weld, measure, etc. but definately worth it