Hi Max, now those bigger Rover bases would be perfect for these Honda motors, my mate is using his HRU215 that had a 2 speed that has finally given up the ghost and he is using that as a push mower, says it gives him a good workout, but the 3 speed one is just too heavy to push. He is using that one gently as I have fitted 2 new boxes to it and I have told him I won't fit another. Now if I could just find a few of those big Rover bases as I am looking for something to put the electric start Honda motor I have here at the moment