i bought a verynice dremel recently with a set of diamond and carbide double edged bits. the dremel and bits cost me 480 dollars once it was landed on the island.. it did a great job though. i couldnt ask for any better. but i know what im doin with my ports. i dunno if u do or not but deffinetly get a friend tuner or anytuner to show u or give u a little explanation of what angles and degrees will change your power and were it will change your power. then it takes alot of time and money and alot of cilinders to get the idea of how it changes the power and were it does so...i have tuned about 10 aluminum cilinders. all were good jobs but not as good as the 10th one because of the trial and error... i also had a very good understanding of how to change the power in the cilinder and what that required...
if u cant do the job and dont wana fuck up then get a tuner to do it.. u deffinetly need the right tools...mexicanos link is a great one..