Buying Advice Satoh Bison S650G engine Swap

[olddog11]

I have a 1973 Satoh Bison S650G and I was wondering what engines can be used as a replacement that has more power.

Kel

 

[Kernopelli]

Check out http://www.tractorbynet.com/forums/mitsubishi-satoh/263961-satoh-s650g-engine-changeablility.html