Engine Prep.

hey everyone...i was just wondering what engine work i have to do to prep my car for boost...I'm hoping to get into double digit PSI's when I get my greddy kit, which is later on down the road... but i thought i might as well start preping the engine...oh and the enigne has about 150K on it....what do i need to do to rebuild it? becuase swapping is a not an option...oh and yes, money is a factor ...thanks guys for any input!!