Yes it WILL swap in with only a specific u-joint! The knuckle on the 12bolt
is smaller than the one on the
10bolt...I have been trying to figure out why... Any quality parts store can
look up the swap u-joint
I Have a rear-end from a '76 in my '85...
| Will a 12 bolt axle from a 79 Chevy short bed 4x4 bolt into a 86 GMC 4x4
| short bed? Same gear ratios. I understand that the 12 bolt u joints are
| different and that it may require a different driveline. Any hints?