[longbed67]

Have you looked at Richmond Powertrax I put 15000+ miles a year on the street with my truck with about 45000 miles on the unit and zero problems. and yeah it will squeal the tire when you get on it in the corner because it locks the axles together but otherwise it is awesome for gaining that extra traction. and a big plus it you dont have to worry about paying someone to install it (takes about 45min to 1 hour) and you dont have to mess with backlash. and they cost about $300 give or take depending on your application