Would these fit?

[Ferretts]

I think these look amazing... there are only a few with the correct 5 x 120 bolt pattern...

http://piaa.com/Wheels/Wheel_Rozza.html

what offsets would you have to use?

[TrakDay]

19x8.5 might be close! I would be more comfortable with a +40 all the way around, but I know people were running +35 for the fronts in 18x8.5 so who knows. You would have to do it to know for sure probably!