Ok so I ordered a energy suspension leaf spring kit since I had to replace my shackles!
Turns out it didn't fit and I had a ZQ6 suspension code on my glove box. I ordered the half ton kit part number from energy suspension is 3.2141r! I installed it last night the leaf bushings are a perfect fit! This situation does call for both the s10 kit and the 1/2 ton kit! Neither blazer kit will work as the eye for the rear leaf where the shackle goes is a 1 3/4" which is why the half ton part kit is needed! The frame bushing is the reason the blazer kit is needed!
You will also need a drill bit to enlarge the whole on the front mounting whole for the leaf to frame attachment as the 1/2 ton has a larger bolt size to mount the leaf!

This information came by spending about 2 hrs on phone with energy suspension and a trip to get a micrometer to confirm what the tape measure said!
So again my blazer required a blazer kit and a 1/2ton kit one for the springs and one for the shackle to frame!