you should:
- replace rear main seal
- check clutch condition, or fit new clucth
- replace timing belt and tensioner.
- check condition of water pump ie leaks or free play
- compression test while engine out of car, saves finding out its buggered after you have fitted it!
and a general check over for oil leaks and broken wiring plugs and the like
(i can cut and paste too, refer toymods)