I parted out a ‘68 XR7 years ago, crawled through many in junkyards, they all had the ‘68 style steering wheel. My parents bought a standard ‘68 Cougar new, I still have it, it also has the typical ‘68 style steering wheel. That car has a scheduled build date of 12B, my parents purchased it on February 29th 1968. My guess is someone changed the steering wheel on yours in the past.
I’ll add - West Coast Classic Cougar is my first choice for parts too, bought a lot from them, both repro & used.