Walker (MPFab) has these. He's running the 18x9.5's all around with an et of 43 I think. Said the fronts were a pain and had them narrowed a half inch. Sounds like it will be close but could/should fit for you since going 8.5 in the front.
But I'm right there with ya. And by the way, I talked to them last week and if you order new they will do the 5x105's that we need. Also, I posted a question about offset and got a response.
Walker Morgan isn't 9.5 all the way around. He runs like 9 wide in the front. With offset 35 I think. And 18x9.5 et42 in the rear. He has a thread of his build floating around here.
But I also have those same wheels, I paid 1300$ with shipping and redrill included. But mine are 18x9.5 et25 all the way around. Your fitment should be very very easy after a redrill. Just be careful when it comes to choosing a tire size. Here's a general idea.
I will admit, fitting a 9.5 wide was a pain to my life and wallet. But I watched MPFab's build very closely. He said anything 9 inches wide with an offset of like 35 or lower or something like that. And I said screw it. I'm goin in hahah.
SO GET THE WHEELS AND MAKE THEM LOOKS GREAT LIKE HE AND I DO! #KlutchWheelsFTW!
Cause #UniqueLOW