Quote Originally Posted by DinanM3atl
In reality it is EASIER to pass an OBD2 car with no cat with O2 sims than a OBD1 with no cat... That would end up almost impossible...

You could install a 3" cat(get a good one.... they don't hurt performance THAT much) and tune the car properly. It will pass.
You are correct. An OBD2 with antifoulers drilled in will not throw a CEL and therefore pass emissions despite the black crud coming out the back.