What are possible issues now

Truck developed codes p0420 and po430, whiich are low catalyst flow banks 1 and 2, I pulled old parts (found cats rodded out by previous owners) I put on all new catalytics and y pipe as well as all 4 02 sensors, truck ran fine for 5 miles then I shut off for about 3 minutes, upon restart I put in gear it shifted hard and truck sputtered and died, attempted to restart and it acted as though it was either flooding or couldnt breath if tried to rev motor it would die idle was very rough then die, pulled battery term allow cpu to reset reconnected and it ran drove it 5 miles home and it had a couple of times where it lost power then picked right back up, before changing the catalytics it drove fine except for the codes generated and if you mashed down to passing gear it would cough and backfire and sputter a bit any ideas? Where to lookas no new codes have generated and im afraid to drive it and get stuck somewhere