Potential new H2 SUT owner...a few questions

[DigiMorphouZ]

Hi...I'm in the market for an 08 or newer H2 SUT that I intend to use for my business.

My vehicle would see very little if any off road time...been there, done that...not very interested anymore. I'm looking for a very clean highly modded black vehicle that would look great representing a high tech photography business.

I'd like to know if the tonneau cover leaks and if anyone has installed a storage vault and how well it has worked out for them.

I prefer the look of the SUT, although I admit the SUV might be more practical for my needs. I carry photography gear and on occasion very large prints (the extra Midgate storage length in an SUT is a plus).

How practical is removal of the rear spare...if removed, how do you resolve tire issues while on the road? I prefer the clean look, although a great looking spare hanging off the back end is not too shabby.

I would like to add wider tires, deep dish wheels and flares to cover the package. What would you recommend for high quality flares?

I'm also interested in headers, exhaust, intake and in potentially supercharging the 6.2L...has anyone had good or bad experiences with this type of mod...I haven't found any info on supercharging the 6.2L on a Hummer...any tranny issues?

I recently joined this site and I've done a number of site searches for answers to the above questions...I found very little if any info to help me out...

Thanks in advance for your help!