After Market/Universal Catalytic converters for Adventra Alloytec 3.6L LY7(190kW)

[gp2015]

Questions about catalytic converter replacement for HOLDEN ADVENTRA CX6 Auto VZ 3.6L, LY7 (H7) V6 24v DOHC VVT MPFI {190kW}

1. Any supplier/brand recommendations for after market/universal catalytic converters for cut and weld replacement?

2. Rough cost estimate to cut out old catalytic converters & weld in new universal catalytic converters


Thanks