Re: It's good to be back again!
Shackles will give you 2". the only way you could use blocks is if you flip your springs. this is when you put the springs on the bottom of the axle.
On the back of mine I found that 92-94 blazer 4x4 spings will work on a 73-81 2wd blazer. I put the springs on the bottom of axle and it rides good. I have about 3.5" before it hits the frame, but air lift makes a air bag that works very good...
hope this helps..
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