Look for wheels and a crankset at Harris Cyclery Harris Cyclery: Your Fixed-Gear Bicycle Headquarters! . The Sugino crankset is reasonable and looks good. You might want to look at an ENO rear hub if there are rear dropout issues. Harris made a rear wheel with an ENO hub (adjustable chain length) one of those for me. I don't remember how PX10 rear dropouts were cut but if they are any kind of horizontal or close you're ok. If you want to spend a lot of money look at Campagnolo, White Industries, and Phil Wood. Good luck!