TrinityToyota

I have an 85 4wd toyota pickup with a 22r and I have been researching swapping in a 22rte. I can get the motor, tranny, harness and ecu from a friend of mine all complete. What all has to be done to convert? From what I have read the gas tank and fuel lines are something I will need along with a few other parts from an efi pickup. But seeing as how I have the complete motor and harness it seems like I should be able to swap them fairly easily, even though these kind of things usually aren't especially when it seems "easy"... Thanks for any replies