New Rotary owner- turbo question

[Turfguy]

hey gang-
thanks for the site; I own a 5.0 mustang, & a 77 Datsun 280z, & now am the proud owner of a black 87 turbo II RX7 coupe. Parts are missing from the engine, & I'm combing junkyards & craigslist to try & complete it. Also trying to find any friends locally who work on rotary's, as its a fresh start for me.
I have an HY 35 turbo off a cummins diesel that I was going to install on the Datsun, but I'm probably selling the 280 now that I have an rx7- too many projects. I'd rather put it on the rx7.
Question is, do you have to revamp the ecu or mass air meter / sensors, etc. to run a bigger turbo? What all is involved in using a bigger turbo? Any help would be appreciated-thanks!