65 Wheel/Tire Size post Axle Swap Guidance

[Magicalzoomer]

Hi Guys,

After swapping to an 84 suburban axle, I need to get larger wheels to fit over the larger rear drum.

My goal is to have them as close as possible while still being able to fit under the body without rubbing. From what I can tell, it is a 4 inch backspace on the rear and 5.5 on the front, does that sound accurate?

I had an 11 inch wide 15 on the rear but it stuck out from the body by about 3/4 of an inch. I was thinking a 10 wide 16 or 17 with 4 inch backspacing would fit correctly.

Bottom line:
I really like the wheels/tires/suspension set up on the beautiful truck below. Any rough ideas of what sizes this guy might be running? Sadly, I cant find any info on who built it.

Youtube
https://www.youtube.com/watch?v=HUXyJRX8LvI


Thanks for your help guys!