1957 Johnson 10 hp Gear Swap

[wbeaton]

I picked up a 1957 Johnson 10 hp today that has a bad clutch dog. Can anyone tell me what the part numbers are for the gears and clutch?

I understand this is the same gearcase as the 18 hp. anyone know what years will swap with my motor? Any help is appreciated. I don't have a parts manual for it, yet.