Thanks!
Yes, 03~04 Cobra-Mach1, The automatic trans is what you want.
I am also gonna look into the tube design on other LT's that are cheaper like MAC, Pacesetter, etc....
I did a quick internet search and im pretty sure BBK does not make LT headers for automatics...Mac,SLP,Kooks,Hooker etc do.
So the LT headers in the install were for a manual stang?