It CAN'T have the thumb lock button if its column shift. There are 3 collars to the assembly, where it's a floor shift or column shift. Floor shift 1st and middle collar has NO PRNDL display area, and the 3rd / bottom collar has the thumb button. Column shift 1st and middle collar has the PRNDL display area and the 3rd collar has the shifter handle attached to it.
If its factory floor shift it will have a console, console brackets welded to the floor, and a hole in the tunnel for the linkage rod.