To add to my previous post, I am sure Shelby and his dealers still offer an install kit for the car. Lots of $ but it could be a big help in your situation. Last time I checked it was 12k for the kit but you get every thing needed to complete. Call Steve at
http://www.goplanetcobra.com/ great help.
In our shop now we have a CSX 4000, Kirkham, and soon to start a scratch build Alloy FIA. We make a lot of the parts needed in shop but it can be difficult sourcing some of this stuff for the first time. I have just completed this exact task for the 4000 and I would have to say the header pipes are the most difficult task. We build ours from scratch in stainless.
There are lots of good people here on Club Cobra that will help you, just ask.