Nice job!
If Lightning had gone for tank treads, it would almost certainly have looked a lot like what you guys have put together here.
We have grown rather fond of the built-in tensioning capabilities of VersaBlocks, though, so my first guess is that we would have stuck with those even if we had gone for tank treads...
Unless.
Rhino treads are significantly longer than your average belts or chains, which means that you need an above-average travel distance on your tensioning mechanism (whatever it may be); this is certainly the reason for the stock Rhino chassis' screw-type tensioners. Looks like you've got more than an inch of travel on those slots up front; do you think that VersaBlock tensioning may have been insufficient for this application?