I swapped in a 92 engine in my 87 and it took probably 3 eight hour days. I spent a lot of time cleaning the engine compartment, changing the seals on the engine as well as the breather box,and installing a new timing belt, tensioner and water pump. I used the opportunity to flush the steering system and radiator. I spent some time changing the clutch and flushing the gearbox as well. My biggest advice would be to have some helper there, if not just for moral support, then to spot you when you pull and reinstall the engine. It's safer that way. I pulled mine alone and ended up denting the oil pan when I lost control of the engine in mid-pull. It cost me an oil pump and pan....not cheap. Anyway, good luck and let us know how it goes.