Aside from proving that any 79-04 Mustang can be a capable autocross car, my 2.3L project is designed to confirm or correct commonly posted weights for OEM and aftermarket parts. I do my best to ensure the weights are accurate.I'd be interested to see that video when you post it. For reference, swapping from a steel hatch to a fiberglass hatch was about a 20 lbs. weight savings on a pretty large part when I measured it.
Still, I'll be interested to see your data on it.