Birthday present:
Jealous. That's really cool.
On an unrelated note:
Last year I picked up a 1/18th scale 71 Cuda 440 Lemon Twist with white billboards from a guy but it was missing the box so it ended up going in a mini diorama with a boxless Daytona I picked up for 15 bucks. My wife and I went to a show today and a different guy that I bought a 1/18th Chrysler Turbine from was there and he called me over. He had a Mopar for me that he thought was a 71 Cuda because that's what the box said, but it was really an orange 70 Challenger that I already have. My wife has become addicted to Flea-Bay, and she's been showing me some 'unrestored' stuff that was amazing and I thought the Challenger would be a good candidate.
Once I got home I got the car out of the box and found that the Hemi and trans were gone along with the exhaust and the shifter, but that's ok because it will make the 'unrestored/barn find' thing a little more authentic, I also noticed it had the wrong tires, but once again, not a big deal.
I checked the numbers on the box and it turns out that the box is for a Lemon Twist 71 Cuda with a 440 and white billboards so the car may be going back into the box now. For all I know it's the original box since PR is sort of a closed economy.