Hm, possible. The bracket support looks like the standard tomberlin welded on bracket support. I'll try to get a picture today.
The only thing I see for mounting holes on the caliper is that big bolt in the middle of the arm system and the ring to the right of it in the third picture. The bracket only has the one hole on the end (pic 1)
I'd love to find a parts diagram for the caliper. I'll keep looking.
I'll poke at it later. Had to take a break from the kart the last couple days.