Stock 3 liter, aftermarket turbo kit from BAE. I paid a grand for my kit (used) with a fresh rebuilt turbo, altogether I have about $1200 into the conversion and close to 100 extra hp. I can take it back to stock in a few hours if I need to. Diffinitive thread on these kits is here: (
911SC Turbo
Nopers, no fishtailing as I don't like to do stuff like that on public streets although I would have when I was younger

It's a beotch getting old.
I got on boost a couple of times but was very careful to have it pointed straight, when the turbo hits it can be dramatic if the tail is hanging out.
I'm up to 8 psi boost and I can really tell the difference the cool dense air makes, the boost hits much harder now and comes in at 2800 rpm.