I just got an Airdog 150 and have some questions about the installation. If I cut a hole in the bed of the truck to access the tank, will that weaken the bed ? Will the bed flex more? Can I loop the return fuel from the VP through a cooler and back into the pump input ? Would it reduce the air bubbles in the tank if I run the return line from the Airdog through a Vortech Air Separator and route the fuel into the fuel canister and run the air line into the fuel filler tube ?