If the truck you're swapping into is a 5-speed as well, things will be really easy for you. As long as you have a complete truck, you pretty much just need to swap over the engine, mounts (if needed), transmission (if needed), ECU and associated wiring. It'll be a simple job as long as the two trucks are close in year. If you're swapping into a 93-96, there will be more work involved as you would have a difference between OBD1/2. Also, if you're swapping from auto to manual, there's a bit more involved there, as well.