I need a measurement please (engine bay)

I've got my engine out, and I want to mock up the radiator (I bought a real nice used aluminum one from Fishy68) So I will need to drill four holes in the core support. This will be much easier to do while the engine is out! I want to make sure of placement, primarily the height of the radiator.

If one was to lay a straight edge (2x4 ?) across the fenders and measure down, what is the distance to the center of the fan?

As far as left and right, I think the engine is supposed to be off center a little (?) So maybe a measurement from a known point (inner fender?) to the center of the fan.

If anybody could help me out with these measurements, it would be real helpful. The radiator has a shroud that I would like to not have to cut up!


Thanks

Mark