Honda Rebel CMX 300 500 Replacement Seat Motozaaa

Just got it. Looks great although might be too soft and might sag after riding on it for a year or so. Very excited to install it. Just to find out that it doesn't fit. Short about 1/2-1 inch. After a second look I realized that even the distance between the 2 mounting brackets is different from stock. Hence there is no way that this seat was designed for the Rebel 300/500. I'm returning it pronto