If you are going to ask, at least right side up your pictures.
Did someone cut the whee openings?
How long are the front and rear shackles?
How long are your front and rear leaves?
The front looks like a B52 kit but it is on the rear most hole so those aren't 52" springs.
http://diy4x.com/product.php?productid=17716
The rears look like 4.5" shackles with DIY4x rear shackle flip.
http://diy4x.com/product.php?product...cat=250&page=3
The front and rear don't look they are zero rated but one ton axles will add about 3/4" to your overall height.
I would guess at least ~7" of lift to clear those 37" unless those fenders are trimmed up.
And if you ask me how I know, I recently installed a B52 and shackle flip in a 69 blazer on 1 tons.
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