I am the new owner of a 1983 Toyota Pickup 2WD, DLX, LN40, L Diesel (2.2), w/ 5-Speed Standard Transmission. It appears the current engine will need a major overhaul. It has bad compression in one cylinder, injector pump needs replacement, head gasket leaks, etc. The technician I am working with indicates he can purchase and import a new engine for replacement (but he's not sure about compatibility with different models). I am considering taking advantage of this opportunity to upgrade to a later model, like a 2L, 2L-II, 2LT, etc . (My tech has warned of compatibility issues with a 2LTE). My question is: would any one, or all, of the above engines make for a simple and easy swap? Any guidance or suggestions will be appreciated.