With the Neu 1512 2.5D finned motor and a 24T pinion, I was able to fit this to the 65T spur just barely (no grinding on the can) and the 68T fit fine, though, if running a 26T I don't think you could get enough space between the spur and the pinion.
62T was just a hair too far away. With alittle chassis grinding or taking off of the fins you probably could get it to mate up.
I got mine mated up with the stock emaxx spur (68t) and a 22t pinion. I have 20 and 18 in pinions as well but haven't tried them yet. I'm running the 1.5d finned version.