on Zed the kit is around $3538 shipped. Chip has them beat at $3254 shipped. There are a couple of guys here that are about to install them. I'm waiting to see what they have to say. The 1420's are supposed to be capable of 550 continuous, 600 short duration. The TD05's are rated for a little more (not sure exactly how much), and cost almost $1500 more, and I don't think that includes shipping either. I can't wait to hear more about them :)