There are only a few people that brake the 200whp mark with a KA. You will most likely have to rebuild the whole motor with everything aftermarket. The engine puts down about 135whp on the dyno. So I,H,E combo would put you to about 155 I would say. Then cams and a tune would do to 165-180 depends on the cam and the tune. Last would be pistons, headgasket to raise the compression. Then if you are lucky, you would reach 200whp. With all these work, I would say a basic turbo kit, which put you way over 200whp, then rebuild engine for 300+. of course tuning every time after the mod.

We gpt to meet sometime cause we both drive red S14.