I like the tube grills on the round eye trucks, but prefer the stock grill on the square headlight trucks.
There should be 2 bolts on each of the bumper guards. I can't remember if you can take them off with the bumper on the truck, or if you have to take it off. I was taking the bumper off anyways when I took off my bumper guards.
The headache rack rocks, especially since your dad made it. I just put one on my Power Stroke (after knocking the back window out again, dam firewood!), thinking of making one for my K20.