Won't pass emissions....may need new cats

[driverdave]

My 92 LS-L won't pass emissions (in Colo.). The check engine light has been on most of the time since I aquired it, yet it hasn't stored any codes. My mechanic guesses that it might be saturated cats causing the CO level to be twice the limit. New cats from Subaru run $1600 installed.

My question is this: does anyone know of a source for new cats that are affordable. Not that I would, but it's against the law to install used cats on any vehicle in my state.

This car is going to be the death of me. With no codes, the Subaru techs have no where to start to figure out why it doesn't pass emissions. And I don't have the time or money to just start replacing parts one at a time until it passes.

Any help with emission ideas and/or new cat sources would be greatly appreciated.