I havent given this much thought, but has anyone considered removing the GEMS system - i.e. replace the ZF transmission with an earlier non-electronic unit, use an aftermarket fuel injection system e.g. Wolf, disable ABS, make a manual control system for the EAS and the heater etc?
Certainly a bit a of work and would end up being a bit untidy on the inside, but you might end up with something you would be more comfortable taking to remote places.

