We shipped his rig yesterday, we're trying to find his tracking number in the moment.
Here's a free tip. When you create shipping labels, you can enter the recipient's email address. That way the recipient gets a nice tracking email automatically! No need to hunt through thousands of receipts littering the back seat of your Pinto.
Since AMT has a corporate account at Fedex, it'll only take less than a minute to retrieve the info from Fedex's site. Same true for UPS, of which I shipped yesterday and already have an account I can visit online to hunt all past and future orders.