I don't know about the Tunny's, so I really can't comment on them but I CAN tell you that the Harmon's have always had phenomenally fast cars.... sadly, the only one that could ever drive with some sense and/or showed any talent was Chris (#6), in my opinion. I've heard Rance (Chris's dad) was pretty badass in his day, though. I've witnessed Rance's brother Larry turn a few laps over the years and hold up a lot of cars with his 15ft wide bumper, but besides that, the rest of them are just hot-headed, talentless pricks with more car than they could ever control.