Zeb from Riverside posted a couple of zokusha RX7s from his archives and this first generation RX7 was one of them:
Bad plumbing RX7
The exhaust really looks like someone did a bad plumbing job (Mario?). On the other side: the front fenders, MR lookalike rear and taillights swap make the exhaust blend in the total look of this RX7. 😉
Good Old Fashioned Hand Written Code by Eric J. Schwarz