So I've Valve springs , head studs , oil pump gears , hd timing chain kit, now looking at what turbo , had a buddy just do a build with the 3584 external but for me was a bit laggy, now was thinking of going gen 2 3582 and going waste gate on a actuator spring in stead of external , but know they Can be a nightmare on stock boost controllers, so what I'm asking is best exhaust, spring and boost controler setup would suit best to minimise spike and lag. do I need to port the rear hosung and get larger flapper ? Psr 3582 gen 2 ? Goal is 450kw . Know it's pushing it yes will be a good time not a long time , f6 engine fg.