And before anyone suggests it: Using a drawing of an Olds 88 logo would not work. While that hood ornament may have been the inspiration for the original trophy, the current design, as refined by Peter Weston and in use since 1984, is not the same thing (and a good thing, too). We want to protect the design from misuse, that's all.)
Feel free to circulate this question to anyone you think might be able to help, and put them in touch with me. You can write to me at my LJ handle @livejournal.com.
Update, 15:30: In case you're wondering, I did first ask Peter Weston. He did not have any technical drawings of the trophy.
Update, 15:45: Wow, what amazing people we have out there! Within a few minutes of posting this, I received one drawing and offers for two more. We'll review them within the committee and with our attorney to find out if they will pass USPTO muster. Thank you all!