to change the front hubs to 5 lug you can use the hubs off a car. I think the 55-56-57 car will fit right on his truck. I did this once but many years ago. I think use the car hub and bearings.
Its no big deal and someone will come along shortly that knows for sure what years. But, as mentioned you may want to consider your options based on what your running or planning to do.
