Before the Second World War, there wasn't much mechanical difference between a Ford coupe, sedan, drop-top, or even a pickup truck. Back in those days, you could get away with doing such things.
The Old Iron Workshop on MSN

The new seat that changed my 1940 Ford

Installing The New Seat In My 1940 Ford How’s It Look Classic Interior Upgrade Bringing Comfort And Style Back To Life #classiccar#ford1940#restoration#carbuild#vintage ...