Fabricated Leaf Spring Slider Brackets?

I know that when I did mine I had brand new springs, so trying to put the spring eye in the right spot in the slider was a bit of guesswork and a little more adjustment would have been handy.

On a race car it would let you play around with different spring lengths or spring section lengths, especially if you had some adjustment at the front hanger as well.
That’s exactly why I’m doing it this way because I’m building it to drag race I want that adjustability based on track conditions and when weight of car changes. I do have front hangers with 3 adjustment points. I’m just figuring better to have adjustability versus a fixed position