When I was looking for windshields for my 2001 750 used windshields weren't available. I don't know how you will fare. However, Tim, Parts, Sportsmans Marine, Lee's Summit, MO got me new ones from the factory. I asked him about getting windshields for a 97 800 and his response is below. They ain't cheap. I've bought several things over the phone from Tim and have never had a problem. The info below may help you deal with your local Tracker guy.
PART NUMBER 33443 WINDSHIELD,P/S 97
PRICE IS 125.58 EACH
CALL WITH CREDIT CARD IF YOU WANT THEM ORDERED.
THANKS
TIM
816-524-2277