I need to do both. Once the roads get slippery I'll park the car and drive the truck every day, but for now as it gets colder I'm still driving the VW. I have to transplant the battery from the Buick, since the truck's battery died and sulfated (my charger refuses to even try to charge it, stupid "smart" charger) while I let it rot for the last month.
I only have an upper grille block in the VW, which covers almost nothing. There's a big gaping grille at the bottom with just the license plate covering it.
My truck needs pretty much the same grille block as yours.