1986 jeep comanchee turbo diesel with 1987 cherokee turbo diesel as parts

I have a 1986 mj comanchee its as strait as can be it does have a small lift I'm not sure what size but it comes with 2 decent 31" tires and a set of jeep wheels. It saposably has a bad head gasket I'm not sure if it does or it was mis diagnosed but it does come with a 87 jeep Cherokee that does run and also has the same 2.1 turbo diesel engine for a parts rig and to swap over the A.C. as well. The Cherokee tranny is cracked where the starter bolts to it so it doesn't crank over. The mj has a extra tank in the bed that was put in by previous owner and ran used veg oil from there restaurant.