Push button trans

I wonder if possible to get a floor shift to work with a bench seat
A

Sure. Seen it many times. All you have to do is mount it ahead of the seat. Aftermarket shifters are generally cable controlled so there's no linkage to take up space. In addition, many aftermarket shifters come with a mini console so it's as simple as drilling 4 holes to bolt it down to the floor and one more hole to run the cable through