In case anyone else needs the information, the caterpillar lp engine in my gp30k is a Mitsubishi 4g64 which happens to be the same basic engine as a number of passenger cars and light trucks. The head is the 8valve version so a head gasket kit would need to be sourced for that particular setup.

I am purchasing the Engine Quest EQ-GSG64 head gasket set to repair my forklift. (Comes with valve seals)

Assembly, timing and torque specifications can be used from any passenger vehicle that uses the 4G64 engine.

-M7