Thanks for the help guys. I was having a sh!tty day when I posted that snarky response. I have to remember people do not like fanatic's.
I did drive on the highway today with the full grill block and it did not get even close to over-heating. It seems it will heat up to about 190, the t-stat opens a bit, and it drops down to 140 or so. I could see this as a problem that the truck is operating to cool. I know I can get a higher temp t-stat so that is on my project list.
I found factory made wheel skirts! Take a look.
Fiberglass Truck Parts & Accessories: Dodge Truck Products
That is next on my list.
The cap is already gone and replaced with a tonneau cover.
I ordered racing disc's yesterday.