Most remote filter stands are compatible with the Fram PH8A. Be sure the center threaded tube is screwed in all the way.
 
K&N makes standard filter elements that fit the PH8A stands. 8001. I like the 550 pound burst rating and flow rate of 12 GPM. The can has a 1 inch wrenching nut that is drilled for safety wire. These cans are bullet proof. I use 100 PSI on the racer. Never a problem.
 
Wicks and Champion make hundreds of aftermarket elements. Champion makes aircraft specific elements. I used Wicks 5151 (350 pound burst) (NAPA) before I found K&N.