Looking into adding upper RS intake pieces like Mani/TB and cams and while the RS4 heads are not worth the cost wanted to know if anyone has had any success with adding 2.8 heads ? From what I heard from one person everything should bolt up fine with the rs4 parts as well as the 2.8 heads have slightly larger exhaust valves as well. Plus, don't the heads come with cams ? Wonder if the cams would have to be swapped out ? Any advice is appreciated. !!