what size carb came on 99 YZ400?

what size carb came stock on a 99 YZ400? Is it the same thats on the WR? What other models (if any) share this carb?

TIA, Mac

39mm Keihin FCR (non MX)

DRZ400K/E (49 state)

and IIRC the early KTM RFS 400 (98-01?)

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