Suspension Looking for Quadshock Mounting Dimensions

So I put an 8.8 in my 83 and I want to run quad shocks. I have J&M upper and lower CA’s but I still have crazy wheel hop. I was wondering if someone could take measurements for me on where the quad shock brackets mount? I already have new quad shocks and frame mounting brackets, but my 83 does not have the holes drilled in the frame for the brackets. Thanks!
 
here are some pics
 

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