You will probably need the B-Nova adapters so that the slot.it guides will fit without too much slop. The adapters can be found online, and can also be used to repair broken guide mounts.
As for the slot.it guides, usually the universal screw mount one is the best for this situation.
Note that you'll also need slot.it (or similar) braid, as well as eyelets for the wires, so that you can hook up the wires to the braids just like in a stock slot.it car. JP Slot sells a kit that comes with new wire, eyelets, and their nice copper braid all in one pack, but you can also get all that stuff from slot.it.