spyder e99 already has an expansion chamber. Anything with Male ASA (tank or regulator threads basically) The only think you need to reconsider is that you have to get at the bare min 1 adapter(opposite of the hose, because i forgot which way it is), and a new hose. You will need a new hose, because like everyone else, you will break the hose taking it off.
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I'm all out of ideas again and this text is so plain.
I'm still not sure how I feel about this new look.