My Freedom Plate was one Eric experimented with and as far as I know it is a one and only. It is narrow like his newest plates but does not have a rail, instead it has "feet" that the tank sits on. The tank is angled to the plate as is the "rail" type. This angle actually causes the tank to sit more natural and brings the upper tank/valve very close to the body. The higher position of the aft end of the tank allows the plate to sit down into the lumbar when you pull the straps snug without the tank rolling on your--uh--behind. Thus the tank and plate are rock solid, no wobble or roll.
I do not use steel 72s with my Freedom Plate and Oxy wings, I use either an aluminum 80 or any of several 7.25 inch diameter steels I have available running up to nearly 3,500 psi. I don't consider it vintage nor do I care, it is my go to dive rig for single tank diving. My rig sits very snug to my back and the regulator is correctly positioned. I like it very much.
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