thanks guys, there looks to be plenty of clearance in the front, I just wasn't sure if the track itself would work or if I needed to buy an old track with metal guides instead of the rubber blocks on newer tracks. I am putting 1" deep tunnel protectors on. I would like to get a 1" track for my vipe and don't want to have to buy a track and studs for the 81 and the Viper. On another note, anyone know where I can get a clutch puller for the 81. They have one in shade tree but I don't know if it is the right one?