Okay Richard, here you go:
From the rear, bottom hinge bolt hole, 6 3/8" to the top mounting hole, 7 1/4" to the bottom mounting hole and 8 1/8" to the clearance hole for the prop valve clamp bolt (which is toward the front of the car, more forward than the mounting holes, down and to the right looking at it straight on from the engine compartment side).
From the front, bottom hinge bolt hole, 6 11/16" to the top mounting hole, 7 1/2" to the bottom mounting hole and 8" to the clearance hole for the prop valve clamp bolt.
The top and bottom mounting holes are 3/8" diameter and there is 7/8" between them. The clearance hole for the prop valve clamp bolt is 9/16" diameter (poorly, hand made by a line worker from what I can see) and it is 1" from the bottom mounting hole.
So you should take the first measurements and make initial pencil or grease crayon marks for the holes and do the same for the second measurements, where the two cross is the center of your holes.
Good luck and let me know how you make out.
Regards,
Bob