i just did mine sat, i pulled the rear shock off to get the back part of the exhaust out. had air impact wrench so it took no time at all and made it very easy to pull out. i did down pipe on mine and that was some fun. the mini max install is easy as long as you can read directions. just push the one wire through the fire wall and to the fuse it tells you and zip tie everything up. just hope your sd card works in your tuner, mine didnt and it took me forever to get it figured out.
2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro Custom Dual exhaust with down pipe, mini maxx, fass titanium 150, egr gone bye bye