I'm building an old school gasser type 51 Henry J, just installing the rear end and suspension, a ladder bar setup with coilover gas shocks. The shocks are about 16 inches long and will either have to be mounted up high where I want my fuel tank and battery to go, or laid back at an angle of about 25 degrees. I have a set of monroe air shocks that would fit perfect, and make my ride height easily adjustable. I remember when air shocks were cool they were really just an easy way to clear oversize tires, but would they work for this? Or should I just keep trying to figure out a way to use the coilovers?

Air shocks don't work, just ask MMissle and see pic below......................

I currently have air shock on my 11 second Duster to clear the oversized tires and I get grief from Al Aguire everytime I ask him about weight transfer and 60' times...

I do deflate the shock as much as possible (while still maintaining tire clearance) and I normally have 1.6x 60' times...

So I would say, yes. they can work, but is not best for weigh transfer..