I've got one Reverie XC twin skin CF seat for sale, super stiff and extremely light (around 5lb's). Deep bolsters give tons of support and seat shape dips below the rails for really low seating position.
Only thing to note is that I had to shave a little bit off the side corner because it was hitting my center console but it doesn't effect the seat or strength in anyway. Seat only, rails not included
Two yrs ago paid $2100US for it plus tax and shipping, asking $1200. New Price $1100

Image of the corner shaving