look just on top of the steering column if there is no space above it for a column shifter to fit it could be an earlier model than the title says when the three speed was only on the floor. you can also look under the hood on the top of the firewall there will be no drainage/water runs out to the sides as on later models. mine's an early '48 (one of the first I think) and I'll never be able to fit a column shift in.