WTB HANS device 20 or 30 M

Hello,



Looking to buy a used HANS Device medium size, 20 or 30 degree.



Have any extras around?



Will be driving in old school Formula Mazdas (not yet confirmed).



I have normal neck size and relatively fit/athletic body type, so hopefully either will work for what I need.



Would like one that has FIA tag too.



Let me know what you have, and price.



I prefer to cap budget at under 400.