Indeedy i did have this conversion, but through Vortex and Phoenix. The reason i deceided to have this conversion done were basically based on the fact that it is a facelift manual i what i consider the nicest colour and was bored with the lack of power after 3 years of ownership, i tend to get quite attached to cars and did not want to sell it. I was looking on supraforums in the n/a section and and this subject of charging the n/a was very popular with one kit being described as pricey but good quality (BoostLogic) so i got in touch with Terry Saunders and he imported me the kit with a few extras and Phoenix did a outstanding job of fitting it, now at present the car is producing low boost 6psi and it is a very grey area to the amount of boost you can run on a safely on a standard headgasket some say 8psi max whilst one guy is running 16psi, me i'm sticking with 6 psi and getting the gasket done early next year then i'll be able to run the boost levels that the T61 was designed for, overall i am very happy with the kit and fitment and most people would keep the boost levels as they are now but i have paid the initial money for kit and fitment so high bhp levels are only round the corner, if anyone is seriously considering the conversion i would highly recommend Terry and Mark, please dont pm me for a price contact Terry