I would suggest noting all you have on the odometer itself along with a copy of the CARFAX report to be shared with prospective buyers. I dealt with this before on a high performance boat that had hour meters replaced. You want to over document the accurate details and leave nothing to assumption - once you get near 6-figure toys the buyers tend to be less tolerant of inaccurate information. Hate to see you lose a prospective buyer over something silly like lack of details on the front end. Its only uphill from there trying to covnince them you inadvertantly forgot.