Down the rabbit hole I go. '60 Apache

[Desert dog]

While on an errand a friend and I stumbled across a 1960 Apache short bed step side sitting out in the cactus desert behind a friends house. It hadn't been moved since parked there in the early 70's. I spoke with owner who said it's mine if I can pull it out of there.
Needless to say that will be a big chore. The pack rat midden in the cab, engine compartment and underneath could be measured by the bushel. There is virtually nothing left of the tires. There is some rust in the usual places but it is complete down to the hubcaps.
We intend to bring it back to life in form or fashion but first must get it to safe harbor, and I'm sure we'll have many questions along the way.

My first one is as follows; I was hoping to grab a set of rollers off Craigslist. After some research it appears that, while readily available later 6 lug wheels wont work on the front end. Can I use wheel spacers to make the newer wheels work? And if so what size would they need to be?
Thanks in advance, wish me luck, photos to follow.
Regards.