http://www.club3g.com/forum/showthread.php?t=12163
http://www.stealth316.com/0-frames.htm
those should be helpful links, the only things i can think of with these motors, is the popular spun bering mods, the fact that IMO there worthless to TT becasue of 10.0:1 compression, and they are notorious for being over rated as far as power from the factory.