I have an older Bounder. I have pulled several different cars with it. 68 Firebird conv. (wish I hadn't sold), that was cool. Jeep Cherokee, then a Jeep Grand Cherokee. The Grand was a bit heavy I think, about 4500lbs. I know I would be better off with something in the 2500Lb range but travel with grown kids and need a little room as well. Maybe I ought to just convert my E420. Its probably no heavier than the coupe. The 123 are very reliable aren't they?