No argument that you can do it yourself. I did mine in '04 and a new car this past summer for a friend.
But, it will take time and a certain degree of aggravation. Unless you know all of the tricks someone like Craig Aylsworth in Detroit
http://www.craigscobras.com/ can save you time and you'll get the benefit of his experience. Craig's installs, about 20 now, are superb, easily better that Performance Engineering ever did for Dynamic's customers and better than any that I've seen.
I'm a SPF owner and have seen about 100 different SPFs. Nothing compares to Craig's latest work.
But it's still fun to do it yourself.
There was a video provided with the last Dynamic cars that did a fairly good job and wasn't too boring.
Jim