Cuervo,
Got mine today...thanks again for putting together this GB.
Question: Did you have any install issues, i.e. heating and bending, for the Y-pipe to fit correctly (like the Brullen exhaust)? I know Brullen/Perf Fords made an extra effort so this would not happen again.
Blorton: the O-2 bung is there on the side closest to the firewall.