Just to clarify comment above, do NOT connect the output of the alternator to the + of the STARTER. You can connect it to the + of the starter SOLENOID. That is the side that connects directly to yhe battery, and is likely the easiest connection point.
Most of the kits suppliers sell will use the same belts as stock generator. I gotmykit from hot rod and custom supply, and i think concours parts among others sells the kits. Its easy to do and you wont regret it.
2 other things to keep in mind....you may need a wider 5/8" groove pulley depending on the belts on your truck. If so you will need to see if the alt has it or you need to get it seperately. Also, while 1 wires are great and easy, no parts stores carry them. That means if it poops out while you are on the road, you cant usually just run to napa and get one off the shelf. Just a consideration....
I have a 1 wire and its been great....
Ron GroveWauconda, IL