I know a guy that ran one in a all steel (minus hood) full interior ‘69 Dart w/a 500 Indy head solid roller running 9’s for years. Not that, that is a “Go Ahead!” for me or for anyone else. For now, when money allows or when I have to, I’ll be running the 8-3/4. I’ll also be looking for a lighter race weight than what you listed as I think it’s heavy for the rear end & what it’s doing.