Hello. I purchased a Mitsubishi 2400 tractor which has a 2cyl diesel engine which had starting issues. previous owner had removed the head to see what was going on (knowing nothing about mechanics). I have discovered valve seats are cactus and have sent it off to get reground. I need a new head gasket but have searched web and cannot find anything in relation to this model. While the head was at engine rebuilders shop another customer looked at it (who used to be a diesel mechanic) and said it was a caterpillar built engine for Mitsubishi. can anyone shed some light on parts and history. regards tim