|
Hollanders shows KAA as a 3.07 non-posi 12 bolt out of a 74-79 C-10. KKA is a 3.73 14 bolt non-posi used in a 74 C-20 and 81-83 C-30. Since you said it was in a 1/2 ton it must be the 3.07. It doesn't show how a 74-79 rear ended up in a 72 GMC. Hope this helps.
__________________
FOUNDING MEMBER OF THE DRUM BRAKE CLUB
Second Owner 70 C-10
Second Owner 93 GMC C1500
Third Owner 99 C2500 Crew Cab Short Bed
|