coming from a person with a 420a you have to know that you will not reach 10s with just a bolt on turbo kit and there are plenty of garages who will work on ur car. but there r plenty of shops who will look at you like a ricer cuz u have a 420a.

but i been reading up on the hahn kit and talk to a friend who bought a stage 2 kit from hahn and hes running faster than some gst's