Wanted Wanted/Swap XTR HP-M900 JIS/27.0mm crown race

[7Speed]

Need reasonable condition JIS specification 27.0mm HP-M900 crown race (or similar assuming Shimano H/sets of the era are compatible ) - will buy or swap for more common 26.4mm crown race (NOS).

Alternatively - happy to swap my NOS EC30/24, EC30/26 XTR HP-M900 for a similar JIS specification headset

7Speed