Jeff,
you can buy it direct from Classic Design Concepts for $795.00. Also from what I hear the kit includes a template and an applique witch should cover any roughness. If it were me I would give the install a shot. Take a look at the install instructions at
www.classicdesignconcepts.com.
I like the way the shaker looks but will not work with the s/c I have chosen to go with, however they do have an application that will work with a vortech. There was an article in a MM&FF a while back that had a Bullit with the shaker and a Vortech.
One other option is to go with the ram air system that uses your current hood scoop which used to be made by KarKraft and is now distributed by
www.yearone.com (do a search for part# ram99blk). Here is a link to someone who has installed this kit and provided some pointers and nice pics.
http://members.toast.net/BillGold/_RamAir/RamAir.htm
Make sure you post pics when your done...