I looked at the drivers door jam to see if the a is on it, it is not. There is a 452 a large space then 30 another long space followed by the 4 digit serial number. The glove box tag lists the model as 452. There is no A on the glove box tag either. On the center of the dash there is a large nomenclature tag that lists the empty weight, payload max weight and the combined maximum weight, plus the contract no. date of delivery, where it was built, who it was built for USAF and the make - GMC and model - 45230A on the same line. Model 45230A is also on my paperwork needed to receive a title. On the bottom of the tag are the large letters PMS with an insignia next to it. I don't know what that is about.
The Hyd./air would be the accurate notation on the glove box, but it only says AIR
