even though GMC and Chevy of this era are basically the same, there are still a few little differences floating around. i have noticed that GMC's tend to have dana rearends, as opposed to corporate units. this applies to 3/4 tons like mine, too. originally a 4.10 or 4.11 , now 3.73. but the dana is the rarer of the 2 rearends. maybe i am smoking crack but i dont think so.
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1969 GMC K2500 
1996 Honda Accord
2007 Kawasaki KLR 650
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