Just got my car back from the Cam install (XE274H). Wow what a difference. The tune was tweaked to a max of 440rwhp. Saved that one for aggresive street use. Backed off the timing a couple of degrees and is now at 426rwhp 417rwtq for the daily driver tune. This is up from the pre-install numbers of 371rwhp (aggresive) These cams woke this 2V motor up. That's 69hp increase on the cams boys and girls, and a nice little idle rumble to boot. I orignally wanted to get the .550 lift XE270AH cams but the valves were just to close to the pistons for comfort. I am still very happy with the numbers and sound. A side note, we installed a set of Fidanza adjustable cam gears. Both OEM cams were over 5 degrees off! Haven't taken it to the drag strip yet but my last trip I ran a 11.93 @ 115mph. Should be interesting...(if I don't snap the rear end..).