I have a 2012 Acura tl base model. Im getting codes p0430( catalyst system below threshold bank 2) and p0400 ( ERG system leak detected). The print out I got from auto zone says I need to replace the catalytic converter. My problem is im not sure what to buy. Its confusing because when im searching for the part there is front, front right, and front left. Im not sure which one to buy. Someone help me please