Front kit for 55 Olds - may be similar
I just bought and am installing this kit on the front of my 55 olds - got another kit from someone else for the rear.
The front kit is complete turnkey if you want, or buy the parts. I ran down to Kugel and picked up a brake pedal assembly.
http://www.streetrodgarage.com/index.asp?PageAction=VIEWPROD&ProdID=498
It's a nice kit - because of the weight the bearings got bounced out of their boxes in transit - no damage, but just out of the boxes - since they are standard parts it wasnt a big deal to get others. If I were to do it again I would just buy the brackets from them and source the other parts locally. I have a complete list of the components.
I don't recall how different the 57 hub was from the 55.
The rear kit I bought was less turnkey - had to buy just the brackets and then weld them to fit - found calipers and rotors locally.
Good idea, Master Power may be another source too. They didn't have a solution for my application at the time. I have used their kits in my chevy's. Another source would be CPP - they seem to do a number of kits.
I think the spindle is going to be the gotcha here.