I dont see any factory 17" rims other than H2's off any brand of truck that are available cheap used ,that'll work on a square body truck...
I've asked around at tire shops and junkyards ,they all say the offset on the newer trucks 17" rims are too "tucked in" to work,and the Ford 8 lug 17's are a different bolt circle and hub hole size than GM's,so those are out...some said Dodge 8 lug 17's might work,but they might rub the calipers without a spacer--and no one had any,if they did they would get 65 bucks each for them used,due to being "uncommon" around here..
I scored 4 decent B.F. Goodrich 17" 245/75/17 e range tires that would be nice for my pickup..IF I could find cheap used rims..years ago,you could buy just about any size aftermarket steelies cheap,like 30-40 bucks,but those days are gone..
Cheapest ones new I've seen online are more like 70 bucks each...
I think I'll just sell the 17" tires and look for 16" ones..truck ain't worth that much $$$ and hassle,just to run 4 freebie tires on it..