For those with a manual aftermarket system, where did you put your fill ports? Suggestions? I'm not interested in drilling anything that's metal on the truck.
I did this for years before I built onboard air... I ran the bag air line into the cab, under the driver seat, through one of the plugged holes in the floor board and I used a cheapo $14 compressor that plugged into the cig lighter to air the bags while on the road. Craig