Got the VIN and fender tag??? I'm going to see by bud over at the dealership in 20 min, He's an old school moparnut like me and has been a huge help with the Spacer..
I wish I did the car was raced at one time and the inner fenders were cut out including the fender tag. The only info I have is the serial #LM23P9B380334.
Thanks
You can use a registry to maybe get your build date. If you can find a serial number before and after your car, you might be able to pin it down. This worked for my car. I found a dude with a number just after mine, and one just before.