55.2-59 59 rear springs

[Mac the Yankee]

Here's a thought (since you've already done the MII front)

I made a run to the local pull-a-part, and for about $60, I grabbed a nice clean pair of 2006 Silverado 1500 rear springs, hangars, AND MOUNTS (drilled/knocked the rivets out of the mounts) to use on my '56. Yes, I will have to do some measuring, drilling, etc, but that sure beats the HECK out of having to purchase OEM shackles, bolts, and springs to the tune of about $500-$600!