instead of say using that whole piece right there, just use what you need and trim the rest that make sense?
And since you would be using the hole given where the kick down would go just drill another hole big enough to put the kick down cable through but put it lower than the original one.
Obviously you would need a spot to put the return spring so then just take a drill put a small hole for your return spring then bam! Done!
Does any of that make sense or am I trying to think like a genius just not one?