MF ,
the only motor that will fit the non Victa bases and how many of those are there out there.
Sapper pretty sure the PT motor will fit on these Rover bases as they are multi drilled, they just don't have the support for the 4th bolt on the PT, not that I think it is that critical On this base it clears the height adjuster bar, the only issue I see is the muffler not going through the base but a bit of modification to the muffler might overcome this problem

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