What you have on that rig is the SSR. The TSL Radial is a different tire. I must agree though, the SSR is a great, long lasting tire. The sidewall is a little weak if you do nasty rock work though.
http://www.intercotire.com/site29.php
http://www.intercotire.com/site34.php
I've tried the LTB's before too. They're super soft and they're not a radial, thus, they flat spot in the morning drives. They work great though. Short life.