Don Hardy is the guy that used to make all the stuff to put V8s in the Vega/Astre/Monza/Sunbird!! I used his headers and five lug front rotors to build my second V8 Vega! I made all my own pieces for the first one because nobody made the stuff when I built it.
Never use a minor caliber bullet on a major caliber adversary
If you do a search, they still have a High Performance shop. The address is the same as the generator shop. Like with most business, he probably diversified over the years.