Yea, they made copies of the MPC Challenger, Mustang and Corvette back in the early '70s and boxed them as "PSM" kits. They also did the '40 Ford coupe that Lindberg has reissued a few times but they never released it themselves back then. It was never released until Lindberg got ahold of it in the early '90s.
The body really isn't that bad, no worse than the MPC that they copied it from. The tail lights could use some work though, I think.