I did it last year. The forum makes it seem like it's really hard but it's a joke. Really easy, the DIY walks you through it bolt by bolt. I had some nice gains after doing it. Better gas mileage and response. I've done it on my car and another fanatics. Both of us saw some good results.
"It has a radio and speakers but it's kinda hard to hear over horny bitches moanin in the back when I start it up.."