Hi Jeff, it is only the 19 inch Powertorques that have the longer shaft that I know of , they go under a number of names Tornado,Big Bob etc, they have a completely different base and all have bigger wheels the same size front and rear. The other problem with fitting a Powertorque to a Rover base is the height adjuster bar will hit the head of the PT, Victa put a step in their bar so it will go underneath the head. I guess you could put a step in it so it went around the outside of the head. Rover bases outlast the Victa base but the Briggs motor will never outlast a Victa. I haven't fitted a Victa to a Rover base but I have my ideas as to how it can be done, then you have a combination of the best of both worlds
