I'm not sure exactly what the Tru-Tracks look like, but the Attex tracks are very close to the body on the Li'ltruck both on top and on the inside. The Superchief set for tracks came with hubs that had two drillings for the bolt: one for tracks and one for no tracks. Even with the hubs set for tracks, there's very little clearance between the body and track, especially at the left rear. Axle extensions would help out, but I don't know how well the 1" axles would hold up to them.
Stuck in the seventies- not in the swamp.
(6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far