It took me and my friend about 5 hours to remove box, diff, driveshafts. The rest was an easy fit. Looks like standard inside with the right gearstick too! I run around 420-430bhp without problems. These boxes are not so week as many think. I ran 2,2 bar boost and 450 bhp through it but want to be on the safe side. You can see my car in PF October number. Mr Muscle feature.