HKS Replacement Filter Element 3 Layer Dry 200mm Green - Universal PDM_temperature-gauges and the top hats are

and the top hats are camber adjustable so that you can gain the extra alignment settings you desire

while the ceramic friction surface gives the heat and torque capacity organic discs cannot match

That being said

Subaru Forester Legacy GT - 2010+

HKS Replacement Filter Element 3 Layer Dry 200mm Green - Universal PDM_temperature-gauges and the top hats areHKS Replacement Filter Element 3 Layer Dry 200mm Green Universal HKS Super Hybrid Drop In Filter The HKS Super Hybrid drop in filter replaces the factory paper filter element with a three layer, triple density dry filter that flows more air while maintaining equivalent filtration. The increased surface area reduces intake restriction most meaningful on turbocharged applications where the compressor inlet draws heavily during boost build. No airbox