Hey Doc,
You might want to check the Revell website. I took a quick look and didn't find anything on there. Keep in mind that model companies change kit numbers every so often but the kit is basically the same. Which model of the Phantom do you have? I have a couple of F4s in my stash, but I'm not exactly sure where I put them. You may want to give Revell a call or write them. Here's the contact info:
Instruction Plans
Revell plastic model kits, please contact us at:
Revell, Inc.
1850 Howard St. Unit A
Elk Grove Village, IL 60007
Phone: 1-800-833-3570
Email: cservice@revell.com
Don't worry about being shy; this is a good place to hang out and learn from other model builders. I've only been on here a while, and it is a blast!
Welcome aboard!