Tim,
If you are building a car, you need this web site
http://www.mcmaster.com/ Type in 1344 in the search area (this is the page number for hangers). You can get these at most hardware stores. I have an ACE nearby, and by the time I got done building my car I knew everyone in the nut-n-bolt department on a first name basis.... they even suggested I get a red shirt to match theirs!
I don't have any pics of my wiring in the engine compartment, but if you shoot me an e-mail I can take some and send them. You might also look here from some ideas -
http://www.uniquecobra.com/topic.asp?TOPIC_ID=807
Good luck!