I run two of these tanks on my truck. Since I didn’t raise my bed floor there is no place to mount a single five gallon tank. You should run one air compressor for every three gallons of air capacity that you have, so a Viar dual pack (two compressors) is perfectly matched to these tanks. I connected my tanks together so they act as a single six gallon tank.
The tank mounting brackets are the ones in the pictures. You need one pair of brackets per air tank.