I prefer the '76-'78 units, as the rotors are made to be used on - and removed from - cranks with external threads & nuts, rather than the '74-'75 CR cranks with bolt rotor retainers. Be sure to get a matching rotor and stator set, with identical alphanumeric stamps on each (5I, 6A, 7H, etc.). If you can get a matching-stamp CDI that would be cool, but I think the CDI boxes may be all identical (they have the same P/N).
Ray
_________________ '74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric
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