Ayo
#2
well the k20 in the type s ....GREAT MOTOR! 6 speed tranny, great combination all around... i would say (depending on budget) just bolt a turbo kit on it, and be done...it will give you around 300 hp depedably... but it depends on what type of numbers you are wanting from it... good luck with it man!
#4
well with all depends on what your goals are... but if you are just wanting to bolt the turbo on and quit and just drive it till the wheels fall off i would just slap Eibach springs some nice struts and be done... if you're wanting to go a lil more extreme then i would put a lil more money into some tein full coilovers... they start around $800... as per turbo kits, turbonetics, garrett, both make great turbos but they are the upper end and will cost you... i know a couple guys that have put on ram horn turbos and they are pretty happy with them.... and they are a lot easier on the wallet