Everything was super simple to install the only challange was lineing up the tail pipes which i'm still not extremely happy with, but then again i'm no expert at this stuff, kinda learning as i go. and spare tire removal is necissary.
I had the dual 4" from DE; it sounded good, by was a royal pain in the arse to install. I had it apart three times, had to trim some parts, and it still looked like crap when I was done. I called DE to ask how it should be installed and was basically told that I was an idiot and they never had anyone have any problems, thanks for calling goodbye!
Never was happy with it, probably won't by another DE product.
Hope yours turns out better.
davek any chance you can post some pics of it I want to see if mine's a little bit different? is yours crew cab short box?
and JFK i know what you mean on how it looks my two tail pipes still don't look right to me, my buddy says its fine but they still bother me. I even trimmed some shit made a couple custom pipes.... Dono though about having a shop try and play around with it see if they can fix it.