Hello Stephen, You can make Honda 750x4 pistons fit but, there is a little bit of work. Firstly you need to get inside and remove part of the gudgeon reinforcing of one side with an end mill. You will also have to narrow part of the small end of the rod. Next you will have to make up four bronze bushes to bring the honda holes back to the Doug pin size. You probably wouldnt want to go down this road but I have -------cut the TS rod of close to big end and weld on Honda rod. When I did this I was still confident it was as strong as the original. Not knowing your location but here in Aust we have motor mowers (of a fair age now) called the Victa VC 160,. and Briggs and Stratton motors. Pistons from these too need a certain amount of work to fit. regards Al
