Thanks Popeye2002, the dealer either had them installed or did them there self so I'm not sure which version I have? 2 or 1 motor version, I'm 70 yrs. old and low back & almost my entire neck is fused which makes it kinda hard for me to get under it to look. My dealership in Utah told me if I take it to a dealer near me where we live in Indiana & they would take care of the cost from the dealer near me since after purchasing & waiting a week in Utah before my truck was ready for the dealer to hand me the keys to it as I had to get back home for doctors appointments. But like you said with yours, that's how I would do it also by just drilling the air tank mounting holes just a little lower then cut out a slot so boots could be loosened, push the tank up enough so it didn't get hit by AMP Running boards and tighten boots back up. As I'm an old diesel machanic for many years then a fabrication shop owner/ manager & it just amazes me how stupid some aftermarket installers are, . Thanks again for your suggestion though as I will be going back to a local dealer real soon after I finish with my doctor visits.I also have issues with the two motor version hitting the air tank when retracted! contacted amp research and they sent out the incorrect tank relocation kit. I ended up using a small dremel grinder to created slots in the tank mounting brackets instead of holes and was able to get just enough clearance to stop the clunking noise from the boards hitting the tank. Hope this helps a little... I understand your frustration with various info out there.