Hi everyone. I look forward to hearing from some of you that might be able to get me rolling on my plans for a 1500 136" low roof Promaster. The goal is to convert the PM into the most comfortable ride as possible for passengers (for commercial use) in the back. So I will be inquiring about things like Air suspension / " Kneeling " / lowering kits. I've been looking into the VB air suspension system. Any info on where to buy this kit from would be greatly appreciated. I plan on adding windows all around & adding some foldaway benches, as well as a floor tracking system. I'd be glad to share photos and walk throughs of installation in return for any information you can share with me to get this project rollin'! Thanks.