We have now packaged together a 1/4" schrader valve system to fill bags. This system will allow you to fill / dump air from 2 bags, so for a complete vehicle setup, you will need a Qty. of 2 kits. This is a great kit for wanting to temporarily fill the bags while working on your project. If using as a permanent solution, we do recommend carrying a small portable compressor in the truck, in case an emergency filling of the bags is needed and no air source is around. This system will isolate each bag on it's own schrader valve.