The track kit you linked to would not work on out tires without modifications. I am pretty sure there is a guid built into the tracks the rollers run on. If you look at pictures of aatv tracks they come up the sides of the tires or have a guide that comes up the side of the tire, or like the amphicat tracks use chain and tapered pieces of conveyor belt. You would be better of buying tracks designed for your machine than going with the tracks you linked to. There could be some better alternatives out there, but the gudes need to be set up right.
l like to buy stuff and no I don't do payments!