CC95 is right. I have a 95 with the 5.0. I live north of Atlanta and have to pass emissions. When I bought the car, it did not have the cats, smog pump or EGR. I had MagnaFlow High Flow Cats installed for less than $300. Took it for emissions and they did a visual to see the cats (but they do not look for the EGR or smog pump), hooked it up to the OBD1 and stuck it with the sniffer probe. I pulled the spout out before the test and pulled it in front of the tester, no problem. It has passed 2 years (with 2 different testers) with flying colors. I have had the CEL come on for the lack of an EGR signal, but I have since had that cut off when the chip was programmed.