help deciphering r&p numbers please

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rbkt65

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these numbers are stamped on the ring gear and the 2nd set is stamped on pinion. can someone help decipher these. i have tried to google info but only comes up with bom #'s. someone thinks they are a mismatched set. but came from my 79 d200. i put 3.54 in place of the 4.10.

ring gear
10 6 78- manufacture date
30360a-????
a3d2-????
41-10- gear ratio

pinion numbers
c dana d1
34017a-????
41-10- gear ratio
a3r59x-????
any help or info where to find help is appreciated.
 

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