I think the only way to make serious money restoring any kind of vehicle is to do it the Bill Harrah did: Do only complete, frame-up remanufactures, and target a clientele with disposable income larger than most third-world nation's GNP.

I feel about any profit I've made from refurbishing bikes or motorcycles about the same way I feel about being a graphic artist: It beats workin'. Getting money for doing something I'd probably be doing anyway is pure gravy.