While spring cleaning, Craig took some photos of various FC seats he has so he could assemble a primer on the differences between seats. You’ll need Facebook to see this and join his “Jeep Forward Control FC-150 FC-170 & M-series. Buy/Sell/Trade/Tech Talk” group. He hopes to have this on the FC Connection in the future.
https://www.facebook.com/groups/835668236472205/permalink/7713417725363854
Here is one example: “FC150 Narrow-track Drivers seat. This one needs a little mount fixing but you can see that it bolts down on all 4 corners. Front mounts 13″ center to center.”