Get on the internet and check out NOVAK JEEP CONVERSIONS. They have excellent information about all kinds of conversions and what is necessary. Now, (after reading your post again...) All you will need to do is to remove the jeep body and front end. I would also remove the truck's body and bed. Now compare and see what you can do. You can probably swap out everything in the drivetrain... all you would have to do is to weld and modify new mounts for the drivetrain and axles. By just swapping out everything, you keep the integrity of your drivetrain which helps with computer issues, fuel issues and parts issues.