This is a NOS AC GM catalytic converter for a 1981 Chevrolet Chevette and Pontiac T-1000 with 1.6 and NN3 (exc VE1).  It may fit other cars and other years but I am not sure.  I do not have the original box.  Perfect condition.

Please add $30 shipping to the lower 48 states.  

Check my other auctions for some nice used and NOS parts.