February 8, 2010 10:49 PM PST
Knucks are nice, but a good single rebuildable head will cost you almost a grand. If you want a solid reliable drivetrian then start with a stock new Evo. A little work, and a light overall bike makes for good performance with a easy to live with engine. Sure you can get a Rev Tech 100" for the same money, but you are not getting as much motor, and there is alot to be said for the ability to get parts at the local dealer.
For frames there are a zillion options for the Evo, and that leaves you to find your personal style. Remember though you want to be able to ride what you build, and while hard tails are cool, and cheap. They will also beat you up pretty good. Same goes for a springer front[except the cheap] If you must build a springer do LOTS OF HOMEWORK. The forks will make, or brake a build on the sreet