I'm not aware of a complete, correct set of drawings of the 427 chassis. You may have to do what the rest of us have done, get the Cobra Restorers drawings and work from them and then ask questions where it isn't clear or something doesn't seem to fit.
If you can follow the Cobra Restorers drawings, you will be very close to a complete chassis with only minor adjustments. However, the suspension pieces aren't on the drawings.
You will have two choices on the suspension pieces once you get to that point- either go with the Kirkham/Shelby original style suspension pieces which will bolt right on (depending on the source, this could get expensive). Or, you could do what some of us have done and adapt a different suspension/driveline set up to the chassis. Alex, me, and a few others have gone to the Mustang II front spindles and built our own suspension pieces where necessary.
The rear creates slightly more of a challenge, but not completely out of your skill level with a little head scratching. I have adapted the excellent Ford 8.8 IRS to my original chassis and I think it will work well- though I don't have it on the road yet to test my confidence.
Most of the help you will need to get to your desired goal is right here on this forum. You just have to ask.
Bob