[mickmate]

Jim Thomas, "the cobra guy" on this website has both 289 and 427 drawings. He is also a super guy to deal with and talk cobras to. Do a search on this website and you'll turn up a few options. If you're doing something like this good luck, I'm part way into it at the moment. I must warn you it's great fun, very rewarding, and extremely educational. The other thing I'm finding is that it can both build and destroy your faith in human nature.
Do it anyway!
Cheers Nick