I only ask because I found one hell of a deal on a slightly used set but the part number is for a 5speed and also came off a 5 speed... but have been told they will fit on either.
your right.. it does say auto. I dont know if its just the way they routed the pipes.. but then why are other long tubes not separated but tranny type?
Also if your going to run big power I think you want bigger then 1 5/8