Will do TC.
HK, I have Registries for Challenger T/As and all 1970 models built at the Hamtramck plans specifically, but I do accept broadcast sheets and other items from other model years and plants. If the cars are known to be parted I record them as such, if the cars still may exist I advertise the sheets hoping that they will be claimed.
There are currently items listed on the site from 81 seperate assembly plant / model year combinations, all are free to the owners of the cars with proof of ownership.
For items I receive I also share the information with the appropriate Registry if there is one for the specific make and model.
Best of luck with your search.
Barry