bucket seat bracket measurement

[cknfrmr]

I was wondering if anyone could help me out or point me in the right direction. I am trying to fabricate the square bracket that locks the front passenger seat down. The one that has the hole in the top and the spring pin locks on the side to keep it down. Where can I find the measurements for that bracket so I can make one or does anybody have one they could measure and send me the measurements? Thanks for your time and any info you have.