My motor died recently on my 25 year old 4 HP Craftsman compressor. I ordered a replacement motor on Amazon but the frame mount was different than the way the Craftsman Motor was mounted. I used the inside base of an adjustable 56 frame mount to provide a base and mounting studs to bolt the motor to. I used the mounting ears and the original mounting pin. The other issue was that the electrical connection was on the opposite side of the original motor so I needed a longer cord from the switch to the motor. See Pics below of how I used the inside portion of the adjustable mount and the original mounting pin.