Originally Posted by Mrmiata
Center Bore Diameter (mm)
66.50mm Lug Bolts Included
Yes Lug Nuts Included
No Notes
Hub centric. Quantity
Sold as a pair. Thickness (mm)
15.00mm Thread Size
12mm x 1.50 RH Wheel Spacer Material
Aluminum Wheel Studs Included
No

GG, these are not for the xf. Studs are too short for the xf mag wheel and has tapered seat. The xf spacer must have ball seats, ball nuts and studs should stick out at least 60mm.
Here's a guy you might want to talk to about this. He is claiming to be able to build to your specs:
Crossfire Wheel Adapters Wheel Spacers Made in USA (2) | eBay