I did that in my toyota, I'm just under 6'3, and in a standard cab I had a bad problem with slamming my head into the roof . I would keep that in mind.. it felt sooo nice, but it was a lil to high...
I do hit my head with big bumps. Found out yesterday on the way back from the show. The freeway sucked, had to drive 6 inches off the ground to keep from bottoming out... X( Hit my head on a few of those bumps.