Help! All my truck books are at work and I just bought another project truck and I am trying to narrow down the year. It is titled a 53 but I think it is pre-51. The drivers side cowl has the vent that opens and the door windows don't have wing vents. VIN tag is gone. Engine has been changed to a 235 cid. Is there anything else that I can look at to determine the year? Thanks for any help in advance.