300hp

Hello, I had a few things I wanted to ask and couldn't get a based answer on Google. First things first, I own an Audi TT '00 1.8vt [180 stock], now 225hp stage1 (AJQ) about 330.000km. so I was wondering if I changed to forged (pistons,rods,crankshaft) and replaced to ko3s to a ko4, would I be...