The KO number I believe is 44,*** or so. Not over 50, k.
One set if numbers, after Sandcast ended, next number went on the first diecast.
Gold paint came out at 26,***. So oess than 20,000KO could have come gold.
Further more, I don't know how fast spare tanks and body parts were available to be sold through the dealer.
Of course another option was traded body parts, but with painted airbox and headline ears, that was less likely, than in later years, where it was a 15 minute swap.