Roccyroad

Hey everyone I'm sure this has been asked before but I'm new here and don't quite know how to navigate the site yet I'm looking at running pacesetter long-tube headers but I want to keep the two original cats on both sides of the cylinder banks the third one will be left out My goal is to run a true dual system with an x-pipe to equalize the pressure(of course) an exhaust cutout and then two rear fenderwell dumps I'm concerned about the ECU throwing the dreaded o2 sensor code or other issues/Hazzards I might run into also looking for everyone here's suggestions on pretty much anything exhaust related or just information in general about these trucks since the whole thing is relatively new to me Thank you!