What a beauty! A lot has been done to it.
I'm a big fan of Tuff Country's lift. I did the shackle flip on my 69 from
www.offroaddesign.com
Make sure all of your rear leafs are in good shape. Found I had a broken one while doing the lift.
I have a section on my website listed in my sig on installing my original lift.
Welcome and enjoy that Blazer!