I am sure this has been covered a billion times, but I couldn't find a definite answer so I'm gonna ask for one

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I have a '76 2wd Blazer that the PO decided to make look like a 4wd by using 3" blocks and coil over shocks in the rear and longer front coil springs and coil over shocks on the front...and I HATE IT THIS WAY! It's time to drop it.
I only want to lower it about 3-4" in the front with a spindle and coil spring. I have read a lot about issues with lowering the rear. I want to lower the rear about 4", but I know there isn't a shackle/hanger set up for these. I have the brackets to do the flip that I made for my '87 so I can do the flip, but what leaf springs do I need to get to put back on it to "raise" it to the 4" mark?