I always get good service when I use stationary engine parts, The connecting rod was used for a Listeroid 10/1.
My existing head gasket went very quickly, pulled water in to the cylinder and when the piston came back up the hydraulic pressure then snapped the con rod next to the gudgeon pin and then what was left of the con rod came through the crankcase. Fitted new con rod, glued up the hole in the crankcase, all now good.