Good choice on the SS Gibson. The issue with the quality of the stainless is only valid if you really care what it looks like under the truck. It will turn brown, but it won't rust through. I live in de-icer/salt hell and the whole bottom of my truck is brown, so I don't care about the exhaust and the Gibson has held up just fine. I couldn't care less about the visual appeal of my trucks asshole.

Not that it matters at this point, but the aluminized is not recommended because if the coating gets chipped off then the pipes rust through, and I don't know about you, but I don't want an exhaust pipe on a 4WD that can't take hits from rocks, sand, whatever.

As for installation, IIRC I pulled the factory exhaust straight out the back. It was pretty easy; no need to jack up the truck or anything.