Jerterh

So Ive been getting this code most more often recently, Changed plugs bc im on 125k miles. Still getting code. I have berks hi flow cats, not sure if they need to be swapped out or what. Then also i saw that could be clutch/ flywheel, which i am also still on the factory clutch/ flywheel at 125k. So now i basically feel like im chasing an endless problem. On one single occasion i had a p0304 come up but only once did that happen. Also my start ups are very weak and stumble, I feel like this could be due to the cats being clogged but i wouldnt think they would be clogged already. Open to any advice.