1972 2wd to 4wd questions and pic request

[1972]

I have a 1972 C10 that I would like to convert to 4 wheel drive.

What I have from a 73-87 truck - 6" all spring lift, D44 completely rebuilt, 14 Bolt FF with disk brakes, axles are geared 4.56, rear spring hangers, 38.5" Ground Hawgs, and a divorced 205 from a Dodge. I want to use all this stuff on my '72.

My truck has a coil spring rear now and I need to convert it to leaf springs. I have two sets of 73-87 rear spring front mounts (pictured below) that I wanted to bolt to the frame using one set as a homebrew shackle flip, but it looks like the frame tapers in from the coil springs to the cab. It looks like the rear spring front mounts wouldn't be straight.

Are the 67-72 rear spring front mounts different than the 73-87 mounts?
Anyone have any pics of the rear leaf spring mounts?
Anyone have any pics of the front leaf spring shackle?

If you've made it this far, thanks for reading.