SEATS TO WIDE ?

The guy i bought my 67 barracuda from had to buy seats for it because it didnt have any when he bought it. It was auto on the floor & i changed it to 4spd. When i put the driver side seat up it hits the floor hump. The bottom of the seats measure 22 inches across. The seats look like they are from a 67 & have the same pattern as my back seat. Not sure why its hitting.