1939 Business Coupe.

Recently built a 235 to take the place of my 216 due to a cracked head. I used the 216 timing cover, bellhousing and transmission. Issue I am having is that if I have the front motor mounts nested in their holes within the front crossmember, the bellhousing motor mounts and transmission mount holes(the engine/trans side of the equation is ~1" too far forward). I can lift the front of the motor, slide the entire assembly back ~1" and then the motor mounts on the bellhousing and the transmission mounts will line up.

Has anyone ran into this before? I am perplexed as the car does not appear to have been altered. The crossmembers appear to be in the correct place, ie: no holes drilled all over the frame, etc.