Did they even build B bodies in windsor for the 68 model year? C bodies yes, A bodies, yes
68 -70 RR's were only built at Lynch Road (A), St. Louis (G) and LA (E)
RM23F8R245761
A car, built at a factory that didn't produce them, was special ordered with a 318... OK.
The VIN on that car is totally fabricated. If the trunk and radiator stampings match the vin, it's a fabricated vin number. It's a fabbed vin based on a B body coming from windsor alone!