FS: 35x14.5x16 Super Swampers on Ford 8 Bolts

I picked up a set of these for my truck, but I'm not sure what I wanna do yet.
One rim is mismatched but similar. I'm told one tire had a small lump in the tread center but I probably couldn't find it if I wanted to.
They came off an 01 F350. I think the bolt pattern is 8x170? And I'm told they are 12" wheels. I'll have to measure to be sure.
I'd consider splitting rims from tires. My 35s rub the leafs up front, so I was wanting a different offset.
$600 or best offer for the set. I'll be at the IAF race in Cedar Falls tomorrow.
I'll post pictures if my phone cooperates.