theaxle code is 61

i kinda figured that itshould be a dana, but, the seal i bought the firsttime
was for the dana, but it was the wrong one, had to get the stearling one
but, the diff cover clearly has dana stamped in it
the truck is the early 99, that may be the problem, and it is the original axle
(been in family since new in 99)
the dealer couldnt even tell me by the vin and the codes
dont know