Yea, imma buy a stock 250 for this endeavor. I have searched enough on here to know I need the bellow list WITHOUT question.
Race exhaust
Sidestand delete/mounts ground down
Rearsets
Clipons
Better front springs/fork oil
Rear shock replacement (w/ bones to raise the rear a bit)
Better brakes and steel lines
I have seen some great lean angle pics of @Rebox but don't know the extent of his mods. But even his lean angle in the pics I have seen is less than that of an equally modded 600cc race machine.
I have given the tire idea more thought too... If skinnier tires equals less available lean angle then supermoto's wouldn't be doing the crazy stuff they do. So I think that is busted.
EDIT: Remember I am not quite a n00b here.