Optional connecting rod bushings shall be selected according to the selected piston pin diameter and the actual size of the small end socket of the connecting rod. Bushing and seat hole should be a certain amount of interference is appropriate. A new bushing can be assembled on the press or table vice. When pressing, the connecting rod and bushing must be placed straight and not offset. After pressing in, the integral bushing needs the right oil hole. The two piece bushing shall be pressed to the side of the small end of the connecting rod to flush out the excess part of the outer end to be filed. Then chamfering, bushing assembly and then reaming or filing.