need help Serial Number

/ need help Serial Number #2  
As I recall, the ser. no. on the b7100 is on the bell housing shift tunnel, I would think yours should be in the same place.
 
/ need help Serial Number #3  
Its near the rear differential lock foot lever.
 
/ need help Serial Number #4  
Its on the left side of the "tunnel" on my 1977 gear drive B7100. I have the printout that will tell you the year if needed.
 
 
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