Relocating center bolt hole in leaf springs?

[Mustard72]

I've searched but couldn't find an answer to this question. I'm going to be replacing the leaf springs on my 72 C20 (actually a 69-70 GMC frame, for what it's worth), as the ones on the frame are garbage, mismatched, etc. The only new leaf springs I can find with the 24" length from the front eye to the center bolt are a little lighter than what I want for towing the horse trailer around, but there are plenty of same overall length leaf springs out there with 26" front eye to center bolt lengths. I'm thinking about simply drilling a new hole for the center bolt through the leaf pack 2" towards the front of the existing hole on a set of these springs to regain the 24" front dimension and thus not change my wheel base or require moving the spring mounting brackets around. Has anybody else done this? We don't have a spring shop anywhere near here that could custom make a set of springs, and if this trick works, the springs I have in my sight are rather affordable (although shipping is expensive, obviously). Otherwise, I could add a leaf or two to the lighter ones that already have the 24" front length, but that would require pulling the center bolt, possibly replacing it, and possibly replacing spring u-bolts, etc. I'm thinking if I could just drill an additional hole, it would be much more straight forward.