Congrats ! and I hope the knee rehab goes well !! I and several other racers have been racing high ten second cars slowed down to run 11.50 in Sportsman for years. I Won the Sportsman track championship in 2013 running my Dart that way. It is perfectly legal as long as the method of slowing the car isn't electronic or air operated and the car isn't dialed below 11.50. The Division One Bracket Finals winner in Sportsman is coming to Vegas with his 408 powered Duster. He represented my home track Island Dragway at the Bracket Finals , his father was the Sportsman Track champ in his Chevelle wagon but he also races a Valiant in Pro Eliminator