i would guess closer to 25K or more and i would leave it as is, let the new owner decide what to do with interior alterations, it's part of the car now and has been that way for a long time. just not sure how much demand is for that color scheme and the 403 when it is not a SE. low mileage original cars usually go for big bucks if in great condition. i saw several non se's at mecum for 25-35K in this type of scenario. find the right buyer and you will get good $ for this ta. fully restored non se's were going for 20-25K all day at mecum.