I made the swap to the 4:11s, WOW what a differance in every gear. Found the gears via an ad here on the bolt. But, I believe there must be a zillions of these out there as these trucks are still on the road in huge numbers. I was told the 4:11s were in the truck with automatic trans. So you need to really beat the bushes and I'm sure you'll find a set. I'm sure most people with these trucks nowdays do not realize the need for these parts expecially ease of interchange in older trucks.
