Pat Cafferdy- well know engine builder???

I bough my ‘66 Barracuda about a month ago & everyone on here has been super helpful with all my rookie questions and issues, so I thought I’d throw this out there. The guy I bought the car from said the ‘71 318 that is in the car, puts out 400hp at motor, with “293 cam, domed pistons, 30 over”, and was built by nationally know Mopar engine builder Pat Cafferdy”, but had no paperwork to back it up. Has anyone ever heard of him? I put this name in the search bar, with no results. I might not have the name spelling correct, I just have to go with the text he sent me. He has told me several things about the car that have not turned out to be true, so I’m just wondering if this is another “fact” that doesn’t hold water. Thanks in advance.