Undead Kodo Mount

Hello, my Undead Warrior is lvl 34 now and I wanted to have a Kodo as a mount. Turns out, I cant get one unless my reputation in Thunder Bluff is high enough. Every guide I watch tells me you have to start in that region to hit that reputation level so I was wondering if Im even able to get the mount anymore since I cant do the quests / they wouldnt give me any rep anyway. Can I even get the mount at this point and if yes, what would be the fastest way for me to fix my rep in my situation?

help pls