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Manic and I both want to allow our old FL1A motors to use the FL820S or FL500S filter's because they are a lot cheaper. PLUS, one thing other bonus is you get a silicone anti-drain back, where the FL1A is rubber.
Army/Navy might have something. If it were me, hit jeggs first. They usually carry the cool AN stuff.
@manicmechanic007 I was doing some research, and the SSP and SVO Mustangs ran this filter. Have you ever ran an FL300? It's a little shorter version of the FL1A.
