What experiences have you guys had? I have a 03 GMC extended cab 4x4 w/ a 5.3 and 3.73 gears. I know a 3/4 ton would be better but I don't want to drive one of those every day. Let me start by saying I live 12 miles from my home track. I might go out of state once or twice a year for the Olds meets but that's it. I was thinking a 20ft. would be alright.