Be careful doing the engine rebuild route. It can quickly turn expensive.
I have recently just completed an engine build, plus six speed conversion, turbos etc. Didnt skimp on gaskets or parts and have no change from 30k.
It quickly adds up.

__________________
STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!