I'm curious why the OP has selected three vastly different driving experiences and is torn between them. Well OK, I guess you could group centri and turbos into the same group as far as driving experience goes. I will give you the highlights:
1) PD blowers. (Whipple, Roush, VMP, KB, etc)...
8K minumum if you're going new and doing the install yourself. 650-700 is about the upper limit on 93 pump gas so if you go over that you will need to spend $$$$ on a fuel system and bigger injectors for E85.
I am doing a 2011 right now with a VMP budget kit. $6K just for the kit. Figure...
Those contemplating a switch to a T56 and wondering how the gear ratios affect your speeds, I created a handy little spreadsheet that shows what your speeds in each gear will be with various rear gear ratios and RPM. Enjoy...
Trans swap spreadsheet
I'll be home installing a PD style supercharger this winter. It's cold and snowy in Minnesota so I have all the time in the world to get this done. I got the Gen3R budget kit. Only difference between it and the full kit are different throttle body, CAI, and heat exchanger. I'll drive the car...
DB Performance is who I would use. No recent experience, but I had a set of rear gears done in my fox body by the owner back when he was just recently separated from his dealership gig and still working in his 3 stall polebarn at his place. Solid guy, good service. If I didn't do my own...
To be fair Alex mentioned that he removed the rev limiter altogether, therefore he would never experience bouncing off the hard limiter. As he so eloquently put "don't shift like an asshole".
About 45 minutes west of the cities here. I have an 11GT (kinda come around here since it's one of the more active Mustang forums). To the gentleman above looking for stock exhaust, I have the axlebacks off my 11 (0 miles on them) get a hold of me if you're interested. I would imagine they...