Just ordered the superchips 2714 for $350, and the Gibson sideswept for $309 for my 2004 z71 tahoe through summitracing.com. I already have the Volant intake. I read some of the posts on members with the superchips and gibson and it seemed like the way to go for me. if anybody has any tips on configuring either of these or what to expect for hp/torque/mpg let me know. Thanks!