67, FLHT seats WILL NOT FIT. The front part of the seat is made differently because of the shorter tank dash that's used on those bikes. Road Kings and SEEGs have a dash that extends farther down the tank and, therefore, the front of the seat must be shorter to accomodate the additional length of the dash. It's just the opposite with the FLHTs. The tank dash is shorter and the seats for those bikes have an extension that runs up the tank a few inches to meet the dash. That seat on a SEEG (if it will even fit at all) would overlap the dash and look really out of place. Trust you can tell what I'm talking about from the profiles below.
If it hasn't been long since you ordered your seat, perhaps you can call Chicago H-D and cancel the order. Otherwise, I'm sure they will let you return it, but you will be out the cost of shipping. BTW, unfortunately, the Road King Comfort Stitch Seat does not come in the "tall" version.
Electra Glide Standard (short tank dash, seat extended in the front) . . .