This is a tough question, but I believe 50% or better of the current drivers would be there.
Most have already been throuh the minor leagues to get here. Yes, some with more help then others. As for the current drivers in pro sports, I'd bet Ryan Newman could play some football at some position ( linebacker, fullback). Jimmy Johnson would make a good baseball pitcher. With his determination, and will to win, I could see him finess the batters into outs even without a 95mph fastball. Kyle and Kurt Busch PRO WRESTLERS, enough said.