Right, well, even though QTP has a nice cutout setup, the soleniod has beeing known to go bad and not work. This is not a random thing, it has happened on a bunch of f-bodies.
If you want a nice, well designed cutout, check out this company...
http://www.streetpro.us/
Never heard any issues from them. I really like the QTP, but, the issues with their product has lead me to look else where. If you want, go to ls1tech and search for QTP cutout, if you wish.
LAterZ!