Maybe go to a Mod Top registry. They may have info on other similar options. Have you decoded your Vin? If not, then go to the vin decoder on this site and that might give you the name of the option. Good luck and congrats cause it must be rare.
I have been to mod registry and nothing. I did find a book that I could preview only a small portiong online and they were talking about a paisley in a 69 a body but the free preview was over before answering my question. Also the second owner told me that the dealer he bought it from in 72 sold the car oringinally and stated to him it was stock. I believe the milage was in the 20,000 range. Also this car is a factory 383 4 speed, but with drum brakes and no ralley dash, tac. This car sat outside in the guys yard. Friends of mine tried to buy it for 15 years. He wouldnt sell. I finally became friends with him and after 3 years he told me he would like to have a bb duster. So we agreed if I would pay the total bill for my 383 auto find a duster and convert to a big block and fix all body work, including paint and interior, he would give me the barracuda. So i did it, mainly for the reason no one else could and I hated seeing another car that just sat and rotted. Oh and the reason he parked it, the clutch went out...thats all.