I got my 317 in the engjne bay with motor mount bolts over the holes in the frame piece. But the passenger side needsvto go right a bit but that'll push the driver side bolt too far from the hole.
Are the motor mounts the same or are they side specific? It wont be too difficult to switch them out but its like 95 in the shop these days.
First pic is passenger side mount and 2nd on is driver side. Both taken from front of car. The rubber will look strange as i had to make them myself.

Brad
Sierra Vista Arizona
1954 Lincoln Capri