Hey, I did all the modifications myself. I just lined up the n/a lim gasket to the tii lim, and ported it. You will need to fill the gap with jb weld, or fill it in, in general.
I was running 10-12 pounds on a knock off gt30, had full spool around 3,100rpm. I have 1000cc injectors I should of put in, before my motor popped. I personally think if you are going to be staying under 12 pounds you get away with using 720cc injectors for the secondarys. (Or 680cc from the fb rx7)
With my new set up, I'll be running a gt40 turbo knock off, with 14 pounds. I believe I made at least 290rwp with my old set up before it blew. With 10-12 psi on the gt30 knock off and high comp stock port. I out ran a car that runs 13.2's. Bad. So high 12's UNTUNED.
To turbo a n/a it's not hard at all. Drill and tap the center housing. Drill a hole in the front cover for the oil return and tap the necessary holes.
(Honestly I love 6 port turbos)