Andy-Mark Rhino Tracks and mating to Vex Gear Box

I’m looking at buying some VexPro 3 CIM Ball shifters for my Andy-Mark Rhino Tracks. I’m wondering what additional components I might need to buy in addition to the gear boxes?

Www.chiefdelphi.com may be a better resource for you, most people here do only VEX EDR and don’t have much experience with the Vexpro line