I've been considering Porsche Turbo Twist's in 18x8 ET 50/52. With the subtracted offset of a 15mm adapter, I think it should come out to a 35/37 offset.
I haven't come across any square setups of these, and the rears are usually too wide with an offset that won't fit properly. I'd most likely have to buy two sets to get the fronts. The goal being to have a square setup that will work on both cars.
edit: I photoshopped a set on to an image from here
http://www.garagefrs.com/blonix-by-iss-forged/