I’d suggest checking the rx7club.com for more details on the rotary engine with nitrous. I personally don’t know much about these engines other than the fact that they rev like crazy, they’re smooth as hell but they chug back gasoline.
I remember a guy I met at Cayuga with an RX7 a few years back was running N20 when I had my s14 with N20. He was running a large shot and he had upgraded his fuel pump, but I don’t think he did anything else.
There is tonnes of info out there and if you really get stuck, I’d try emailing Nitrous Express.