I have always wanted to build a turbo A-14 or A-15, and I have most of the parts to do it, but want to build an engine the right way for it first. I've already got the fuel injection, a good IHI RHB-5 turbo, and dual valve springs waiting for it. When you say the engine was built for 200hp what does that entail??? What kind of camshaft/specs are you using? I want to wait till I get to Japan before I would build the engine for it so I can get some goodies from Pit Road. Then again part of me says it's probably cheaper to just throw in a bigger/different engine! I just don't know!!! But there is always more potential if I start with a bigger/newer engine. The internal debate continues..... CA18DET or Turbo A-15 or KA24DE or ?????