at least i can honestly say i can hone my block... get the 700 grit honing stuff from the CNC machinery. but in all honesty again, theres a shop. called the "motorcycle shop". owners are spanish. dan somebody or another. well, his kid started it and killed himself in a crash, so dan took over. ha, his mechanics couldn't ream the valve guides. by hand, including set up, getting all the tools, clean up afterwards and the reaming process, it took seriously less than 7 minutes. so 7 minutes of my time, $100. not bad... so i guess, you should learn how to do shit for yourself. same thing with valve lapping. i've made a quick $150 bucks to lap a motorcycle head in before. all because people couldn't comprehend what that suction cup on the lapping handle is for... or the lapping paste. theres a guy in my neighborhood, i told him not to switch from regular oil to synthetic. he went ahead and switched anyways, and destroyed his block... anyone know why? when he switched, the synthetic loosened all the sludge, sludge goes into oil galleries, and boom, blown motor. i mean that was a costly piece of advice that had to be learned the hard way. but whatever, not my problem.