if i get a stage III turbo will i have to buy a Vortech FMU and a New clutch along with it. is there anything else that i will have to buy that does not come in the 16G turbo kit?

It's always a good idea to get an EGT gauge and A/F gauge to monitor your engine.

And yes, the FPR that comes with the Hahn kit is definitely NOT the best out there. And from personal experience, you're gonna need a new clutch too. I burned my stock clutch up in 2 weeks.

You dont need the clutch right away though. I have been driving on a stage 2 for a year with the stock clutch still holding like new. I am still using the stock clutch on my stage 3. Lets see how long it lasts at 13 psi.

stock clutch going to be 100k soon and still grabbin. Hehe not grabbin like I want it to but it's still grabbin...

ive put about 9000 miles on my car with stage 2 and my stock clutch hasnt slipped once.