I have the extended ones on mine. There a little large as I only have stock tires but you get used to the looks. They do not stop one speck of mud from flying up the side of the truck. In fact because of the distance they stick out, especially at the rear, the front wheels throw all the stones etc. into the rear flares which are all stone chipped for about 10" up. So much for the paint job.
They also don't fit well to the contours of the truck, even with trimming and fussing. And yes they do rest against the body of the truck separated by a black rubber strip. It hasn't caused any rubbing damage that I've noticed as yet. Not to say it won't though.
These flares should be installed only in conjuction with big mud flaps or running boards to prevent the chipping. It took about one hour on gravel roads to ruin my paint.
To make a long story short I would not own these again. Far to expensive for what you get and the little protection they give.
I will eventually replace these with the one piece fibre glass running board flare combination, although not perfect, but alot better set up and protection for the money than the Bushwhackers.
This maybe isn't what you want to hear. But these are my experiences and thoughts. Pete