Same system that I have in my work ute, he wont be sorry, best thing I ever did putting one of them through the roof, no more cold fingers in winter, and the bonus of folding them up out of the way is great. I use mine fairly loose when looking around, a quick twist of the locking ring and the light is nice and firm when taking a shot. Good bit of gear eh. Only thing I did differently was I didn't reinforce the roof, but I only run a 7 inch light and haven't noticed any movement in the roof yet, its been in there a couple of years now. nice job.