Circuit Sports Mazda Miata NA/NB/NC(also fits FC3S, FD3S, RX8 SE3P 04-11 and Protege 85-03) 55mm steering wheel hub(Part No. : SBH-MZ01B-GD). Used for a month or so and cut part of the bottom side lip to try and get it to work with the NB clockspring, doesn't affect functionality. $75 shipped in the USA.
https://flic.kr/p/XrVahn
https://flic.kr/p/X431eL

https://www.circuit-sports.com/colle...miata-na-nb-nc