There are loads of 3D printing service companies out there, large and small, likely in your home town. Buy one if you like, but it's easy to upload an STL file and have it printed in any number of materials for you.
I'm running 33" Toyo OC AT3's, stock gearing, level lift, ford tune. While the speedo is slightly in error, that's the only issue I can find. Even with the spool-up/gear selection lag, I'm consistently the first through an intersection, and get 22MPG in Colorado.
I also tow a 6000 lb trailer...