I think offset and back spacing are the same ( so I was told ) the only thing with a little different offset / back space is the Sequoia/Tunda 17" wheel that I'm aware of . Also maybe the 17" FJ wheels , but not really sure about those .
Yes, I am for sure selling the 17" Helo's, and probably the Goodyear Wrangler Silent Armor's 275/70/17. I'm pretty much taking it back to stock so I'm looking for some 265/70/17 tires.