I am a bodger, from a line of bodgers, and one who has happily passed on my knowledge of bodging to the next generation.
I recommend learning to weld, or finding a tame welder person. They are invaluable.
However, if I was in a weld-free world, I would try to find a length of thin tube from a good model shop. I'd cut the clips at the point shown on your photo to lose the inch of excess metal, and then use as-long-a-piece-of-tube-as-possible to join the two ends together. Secure it using araldite, and use a little heat (boiling water is good) to pre-heat the glue. This makes for a quicker bond, and better bond.
Are they chromed spring steel or stainless Bilko, try a magnet on them. If they are Stainless I will have a go at welding them for you if you want to post them to me.
Do you really need an inch? The sprung clips seem to come in two different lengths, not much in it but enough to make the difference between my cut panels clipping on or not.
This might be totally bonkers, could you fit the springs higher up the frame in a position to suit your cut panel? The number plate would still hide any fixings for the retainer plate. The springs would then be shorter by virtue of lifting one end higher while the other end stays in a similar position.