No problem,
Basically ANY early 6 cylinder RB Nissan ecu can be chipped to run turbo basemaps.
The ecu's are SLIGHTLY different between turbo and non turbo, just the hex locations. One doesn't have knock location one does. (one uses 128 chip and one 256)
U know when you can chip the ecu when it has a chip socket, but ALL 6 cylinder 89-95 do. OBD1 basically.
R32 skyline, Cefiro, Laural etc.
You can also use a OBD1 ecu from a R32 syline, on a R33 syline, however you won't be able to use the variable timing cam gear. (no output for it in ECU)
BUT if you use the 300ZX ecu and nistune you can use the output for an R33.
The ecu plugs straight in
The SR20 powered cars can be chipped as well, they are 16 bit and need a daughter board to add two chips. (So two ostrich)
The Crome equivalent would be Nistune I guess. There is a free version you should be able to use, prob has an expiry.
A few people actually tune these ecu's using crome with a plugin, however I feel nistune is a more complete solution.
Remember it's air flow metered system, so load based not map like Honda.
So AFM scaling is important if you change injector size, or put the AFM into a bigger housing etc