single high flow catylitic converter or should l try and get two and try to rig up some kind of exaust system

take it to an exhaust shop & have them finish making u a nice exhaust for that truck they can run duals on it or run it any way u like,you,ll need the cat on it though,unless u live in a state with no emissions checks,but you,ll still need something to operate the 0-2 sensor on it,i got 2001 model with dual cats & it runs exceptionally well,i had an exhaust shop improve on the system that was on it when l got it,they ran it in to duals,and everything works fine on it,good luck.