IT SOUNDS like a wonderful car, one any early Falcon enthusiast would love. From your description, and the fact it was owned by a Ford employee before your father, it could be a special-build car, which makes it hard to put a fair value on it.  An XY Fairmont is worth $25,000-$35,000 depending on the options and condition. A Fairmont GS is highly prized and worth $45,000-$55,000. Yours appears to be an optioned-up Fairmont, and I believe it could be worth $35,000-$45,000. I understand your frustration at being asked if you want to sell it every time you take it out; a have the same feeling every time I drive my XW GT HO.