If you're gonna DD the car, go with the VS cam. All the power you need is below 6000 rpm. KR is nothing compared to high rpm's on a 3800. If you don't rev your XP to 6300 rpm or better, it probably won't make more power than the VS anyway. The key to a 200-300K mile 3800 is easy. Rev low, and eliminate KR. I'd rather have 6* of kr for 10 minutes than take a junkyard L67 to 6500 rpm for 10 seconds.