Hello! I have an 06 eclipse gs. Contemplating a motor build so Im here to learn from the RA gurus

 

Well you would have more luck in 4g eclipse forums. You have a 4g69. It should have some potential for boost. Judging by the 163 stock hp i'm assuming the Compression ratio isn't too high stock so you could turbo it. Of course you can always build the internals and make some serious hp.