The datum is the face of the dash (firewall), at least on the AD series FAM. So hopefully the replacement firewall got put back in the same place. But you could reference off another point that's defined in the figure. But if the firewall is in a different spot front to back, that might throw off the hinge locations completely. I'm not familiar with the later hinge mounting.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.