O2 sensor on the smog machine is malfunctioning, but for a car with cats, what would your opinion be of these numbers.

900 rpm, in park:

HC => 10 ppm
CO% => .03
CO2% => 15.4


700 rpm in drive:

HC => 20 ppm
CO% => .05
CO2% => 15.2


This is WAY better than when the misfire was there. But it still has a little roughness that I know I can get rid of. I suppose I need to get the O2 operating again to see the whole story. But what do you guys think of these numbers?

I think you're well below the limits in most states. Amazing the difference in emissions with just one fouled plug isn't it?

Looks clean. I can't really compare those to mine since mine was on the dyno. But off the cuff I'd say your car is way cleaner than mine.