Was at the salvage yard today checked out the 57 gmc 9700.. I was really pleased to see that all of the rims were 20' and did in fact have a locking ring design which was really really good to see. The 2 speed rear (eaton?} had the electronic activator. I picked up the complete front beam with wheels, and rear diff with all the 6 bolt wheels at a reasonable price. This will hopefully all fit under the 55 chevy 1600 very nicely. That or blend the components together to be able to run the 6 bolt wheels !!
