A lot of people over the years have changed doors. You can have 52 doors on a 49 or any other combination. If you have the vent windows you should not have the side cowl vent in front of the driver's door. Do you have push button door handles or cranks?
You see a lot of "1948" trucks in car shows BUT they do not have the side cowl vent. A lot of hot rodders put the one piece windows on later model trucks and then call them "48s" so they can meet the year cut-offs for some shows.
