ok now lets keep it real. how many people you know that want to do turbo and want only 300hp and they really want to stay there even after three months? lol you know all turbo freaks want the same thing. more power after a while!Not true quite a few type-s have broken 300whp with a greddy kit and 3"downpipe/exhaust.
Ts, if you know you will be content with 300whp and never want more power then greddy is the kit for you. As far as internals you dont need any for 300whp.
Here's a complete kit that you can consider with 3" down and exhaust