leaf spring relocation question

I bought the relocation kit from PST suspension. The boxes are really long and will require some trimming. I ended up buying another set of just the boxes from RMS. these have the spring holes drilled already. I used the RMS boxes and notched the frame bottom out completely. I bolted the front spring mount back in place and bought an 8" long 5/8" bolt and nut and attached the new box to the old mount. Worked like a champ. Moved my springs in 3 2/3". Before I mounted the RMS boxes I used them as a template and marked my PST boxes to use in my other car.

I was amazed at how thin the frame rail material actually is. The new boxes are much thicker and should be stronger.