JWJR is about right on this one. The only downsides to the HL clutch kit is that it looks like a bitch to install, and it takes away from the top end. Whereas, the a powerkit will more than restore the power. I can pull my 27's off the ground in 1st and 2nd, the downside to doing this is obviously the cost is about 3x as much and you have to re-jet. Which is really not all that hard to do.