U01 Marker Lamps question: puck vs fireman

[jocko]

Quick question, just want to confirm - the hockey puck and fireman's hat marker lamps DO both mount to the exact same round mounting pads on a marker lamp cab, correct? If one were to, say, want to convert from a hockey puck lamp arrangement to a fireman's hat, it's just a matter of replacing the amber lens as long as it's an original U01 cab, right? Hockey pucks aren't that common, always thought they were more of a 1-ton thing, but have seen them on 10s and 20s. Anyhoo - pretty certain the answer is yes, but just wanted to ask anyone who has had a cab like this and actually done the lens swap. I have a set of fireman's hats, and they are round base - so am assuming it's a 1-1 swap. From what I've seen, it appears both types have two hold-down screws that mount on either side - thus my assumption. Am also assuming they both use the same rubber seal/gasket(?)
Thanks!