Good news is that the FAST and your build plate line up. Does the number stamped on the firewall match up with your build plate? Bad news, to me the chassis and model don't line up with the NISMO edition. I could be wrong, but NISMO edition was built in 1990 and into the start of 1991. I have been thinking that MA could be for some factory options, for example L-Fog lights, P-Sun roof. So MA could stand for something.
Even if it's not an NISMO edition it's still looks like a tidy car.