Who was the longest World heavyweight champion in NWA/WCW history?

BQ- Where can I find this action figure playset for my little brother? a href="http://www.dinoriders.com/Toys/Toys(Dinosaurs-SabreToothTiger)Rulons.html" rel="nofollow"http://www.dinoriders.com/Toys/Toys(Dino…/a