A 360 in a RX7? Lets see the pics. I worked at a Mazda dealer in the mid 90's and got in a Miata one day.
No external clues about what was in it, there was a Mopar Performance sticker and it had a different hood with a bulge in it, and dual exhaust tips on it, which i thought was strange.
Got in it and started it up and it rumbled, What the?????? It had way more power than i thought it would. I got it in the shop and popped the hood and there was a 318 in there, built headers and exhaust. Really cool.