Just replaced mine. Definitly not 9 hours if you do it all at once. Umm.... would definitly say there is a lot more work involved than in any other ingine lol. I will try to trace what is involved. Might not be in the same order, but I will try lol. Coil pack has to come off. Brackets[if your car has them they are like black bars running along the sides]. Obiously the battery which involves removing the washer fluid resevoir. Undo the throttle body. Upper intake manifold. [duh] Altenator well move it out of the way. Fuel Rail and injectors. and then the lower intake manifold. I believe that is it. Hope this helps(: