I get anywhere from 27 with mostly around town driving with a heavy foot, to 40+ on the highway.
I tried clocking it with a stopwatch, it was somewhere around six seconds to 60. Your 90 is heavier by like 150 pounds, also I had I/H/E on it when I did that, as well as no a/c, no spare/tools, few other little things. Also if you get a first gen one like mine you get a crappy 4.266 FD, which is 10% taller than later B16a transmissions, which also hurts acceleration. I have one off a '92 GS-R which has the 4.4 FD. If you got an open diff you would probably have to back off through first which would also add time, I have an LSD. So for you it might be in the mid to high 6's in bone stock form.

I've never ran the quarter so I dunno about that.