I have 2 catalytic converters for sale. I pulled the first off the car before starting my FI project. The second I bought new and never used since I changed direction in my build:
1) Used Magnaflow direct fit for 1.6L NA about 30-35k miles: $60
2) New Magnaflow direct fit for 1.6L NA, includes gaskets: $80
If you're interested, send a PM.