They sell imitation catalytics that clamp on to your off road pipe. They are just covers but look like the real thing. My buddy used them on his 87GT, the guy put the mirror under the car, the $8/hr tech guy never suspected anything.
These will help you pass the visual, but not the smog test. SInce his car was an 87 with a fresh engine he passed anyway. The older cars can get away with dirtier exhaust because the standards are lower. So give it a try.
I'm not sure where he got them, but I'll try and find out. But in the meantime, if u are ina hurry, I'm sure you can do a search online and find a set.
