Replacement of catalytic converter in my 2004 Toyota Celica

P0420 Catalyst System Efficiency Below Threshold.
Replacement of catalytic converter in my 2004 Toyota Celica.
I used a walker catalytic converter with the resonator, gaskets and hangers. Purchased all on amazon, Part numbers at 40sec.
Model years 00, 01, 02, 03, 04, and 05.
Always be careful when working under your car, another thing to KZbin.
The benefit of fixing your Catalytic Converter is noticeably better gas millage!
Tools Used:
OBD2 Scanner Tool
Penetrating lube
WD-40
7/8” Open End Wrench
14mm Socket Wrench
Flat Head Screwdriver #2
Flashlight