That's half price on those rear shocks and they ROCK! I couldn't believe the difference they made on my car when I put them on. On the softest setting the ride is as smooth and comfortable as stock but the dreaded wheel hop on bumpy corners is gone! Then on track day you can crank them up almost solid for hard launches without spinning.
If you don't believe me, call up Sam Strano and ask his opinion on which shocks he recommends for the s197 Mustangs.