The RK 19 and the Emax 20 are the same TYM tractor.
I used the Berco 40 inch universal and modified the brackets to work. I chose the universal, because the cab is not as tall, and I had already cut shortened and rewelded the rops to find under a standard garage door.
The only thing left to do for my install is put a 1 inch grommet in the cab for the chute crank.