Load Index/Rating

I've been shopping around for new tires, and i decided on the Nitto Terra Grapplers (even though i really want the BFG AT) Can use ones with a 119 Load rating? I can either choose a 119 rating or a 123 rating.

 

I have the BFG G-force 20" low profile tires on my 2005. I tow a 18' bass boat & the load doesn't have any negative effect on my tires. Good looking tires with oustanding performance. This is my second set of tires. My tires are not specifically truck tires, but work fine for a truck that I drive like a sports car.
I think my tire size is 265/50R20/XL
http://www.bfgoodrichtires.com/overview/g-force-t-a-kdw/22.html

I would ask the tire store what they think on the load rating. It may not matter between the two.

Good luck!
Sean