if you have the sniffer test for OBD-1 and the car had a highflow cat and a decent tune you'll pass. Heck my old del sol almost past with a straight pipe on the sniffer test. (if the tuner leans it out more in the partial throttle areas)

If you can have someone make you a quickly swappable cat/test pipe combo. Put the cat on, pass inspection, then put the test pipe back on