Quote:

Quote:

Originally there was material at the bottom of the seat and the vent would allow the firmness of the seat to be adjusted. I have a 46 with the same vent. It took me asking on the yahoo group to get my answer a few years ago.


yup. It was an option on the trucks at that time.


just goes to show you aren't too old to learn something ! and here i thought it had something to do with the underseat heater ! how heavy was the material used, and did it even come close to working as planned ?