Brian; the S/N is on the data plate located on the glove box door.  If you don't have that data plate, its also stamped on the left-side frame rail (see photo for approximate location).  It should be an 8 digit number beginning with 914...
		 
		
		
		
			
		
		
		
		
		
		
			
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				1953 M37 CDN 
 1953 M38A1 CDN 
1967 M38A1 CDN2
			 
		
		
		
		
		
	
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