***I wished AMC Jeep would have kept the passenger side under seat storage compartment that Willlys and AMC models had until 76.***
That is what mine had, in the floor. Under the driver’s seat was a second gas tank.
I’ve never seen dual tank setup in a jeep.
My Willys has the factory under seat one that some people nickname the driver’s seat an ejection seat. I wouldn’t want to try that ride.