I swore I replied to you. Oops. Check these guys out:
Wheel Adapters, Wheel Spacers, Hub Rings for your car! | Motorsport Tech
Motorsport Tech is your absolute number one source for wheel adapters, wheel spacers, and hub centric rings. We manufacture the finest adapters in the world, and we do wheel polishing, chroming, powder coating, and color matching, as well as sell wheels and tires at WHOLESALE PRICES.www.motorsport-tech.com
If you decided to move forward, let me know what you end up ordering. I have a set of adapters on order from them but would love to run the 9.5s all around. Worse case, I'll have a spacer for the rear made and run 9s.
So quite an old thread but stumbled across it trying to find a solution for square X setup. Have 2020 MXP and was considering getting 4 19x9.5 +45 did you ever change to a square setup and did it work? Think tires would be 265/50 R19 but could be wrong. Not a wheel expert at all but this is where I was getting with researching.