I had a coworker send me an ad for a '75 RD250 today. I called my coworker a bunch of names for that.
Anywho, it is super cheap, and local. I am going to check it out next weekend.
What makes the stock frame a pile to flat track? If I could make the stock bike handle well enough to last me a little bit, it would buy me time to find a proper purpose built frame.