Hi Eric.  Per Rob's comments, the bracket has angled mounting points for the 3/4 ton where it fits the arch of the front fender.  Even if those were fattened out, the center to center hole dimension wouldn't change noticeably from the 9-1/2" dimension mentioned previously. 
 
See photos; the overall height is 8-3/4", and the flat top dimensions are 5-1/2" x 8". 
 
UPDATE - After rechecking, I agree with Brian's hole dimension of 6-1/2", and after removing the old bolt, my height measurement is closer to 8-5/8", but that could be the difference on how much the lower tabs are angled vs Brian's.  Assuming Brian has a NOS example, his measurements are probably more correct.
		 
		
		
		
			
		
		
		
		
		
		
			
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				1953 M37 CDN 
 1953 M38A1 CDN 
1967 M38A1 CDN2
			 
		
		
		
		
		
			
				  
				
					
						Last edited by Wayne Hingley; 17-12-20 at 20:47.
					
					
						Reason: Add photos
					
				
			
		
		
		
	
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