A few of you have PM'd me the same questions...
Q: Will this fit the newer trucks with high bed sides?
A: Yes. I paid Jettrax to upgrade this unit for all of the newer trucks. I have a new Silverado Duramax 3500 and it fits great.
Q: Does it have caster wheel upgrade to roll it around?
A: Yes. They pin together at the base on all four corners. One person can roll it around easily even with two PWC on it.