There are shift boxes with two short arms.
You can also find just the short arm by itself - I have seen one NOS before years ago.
You can also buy one or two used shiftboxes with at least one shorter arm each and make your own dual-short-arm version. That's what I did years ago.
These arms are very easy to disassemble and replace.
Also try to find the little spacer-sure-shift aftermarket kit - you will never have a hanged up shift box again...
