Correct Sizing and Part Numbers for Alcoa Dually Wheels.

I'm looking for the correct part number and sizing for a set of Alcoa dually wheels. I'm hoping to have a part number associated so I can go to my vendor an place an order. I was hoping to purchase a set of adapters from Trevor at TW&T. Originally Trevor and I tried to find a solution to shipping a set of wheels to Alaska but the prices aren't the best. I figure this is my next best option.

Looking for 22.5's to go on a 1979 GMC C30 Camper Special. I'm going to be lifting the front to level the truck out, then I'll address fitting the tires from there. (I'm aware some people hate the look but I personally like it).

Trevor, if you happen to read this, I sent an email a couple days ago for your reference.