You would need a Briggs engine that was intended for a Victa mower base: Victa uses a shorter output shaft than everyone else, for compatibility with their 2 stroke engine. There might be some minor cobbling of the speed control Bowden cable. Otherwise, as far as I know, it should fit. However check the output shaft diameter as well as the length, because Briggs and other engine manufacturers offer various output shafts as options: different diameters, with and without keyway and axial thread, even with taper or external thread, though these are unusual.
