The answer depends on what you are starting with. If you already have an IDIT block, you are golden. Anything else might have some special work needed, depending (that word again) on how much boost you expect to make and use. Low boost (under 10 lbs)would not need much of anything, the engines are pretty stout to begin with. If you are nervous, shave the piston tops .010, maybe have them coated to help deal with higher running temps. As stated above^, do research and decide what you need. We will still be here for more questions.