Hey Hemi-Don,
I would pass on the Parnelli Jones if I were you as I haven't had any raves about them from customers who have them. One of our customers bought a set that were out of round and all of the other ones I've seen don't seem to last very long. If you are not planning on modifying the truck right away and will be spending most of your time one the road, I would consider the 37/12.50/16.5 Adventurer Unicures if you want to stick with your 16.5's or move up to a set of 17" Cepeks with 37/12.50/17 Good Year MTR's. Both tires have the aggressive look that your after but wear extremely well on the road. They aren't too bad for the occational off-road trips either! Of course I prefer the 41/14.50/17 IROKS but that's a whole nother thread of mods.....
Travis DePew
www.RubberDuck4x4.com
(513) 617-0913
"Don't go in without protection"