Can measure the mounting holes, maybe a aftermarket other brand seat bracket mighty work. I have my Cipher seat out and and measure the mounting holes for you to compare if you like? Ciphers that I have are made for a A body and fit pretty good. Here are what my seats look like. Or can just order their brackets and modify to fit your seats. They are good quality frame mounts. Found a pic of them from my thread.
View attachment 1715687630
View attachment 1715687637
