[vettestr]

Jim,
I too am a early AM person but 5 oclock is not good and 7 oclock for the other side is not good either. The only way to clock the sensors so they are the least visable and still protected is to place in the bottom inside of the sidepipe. This does protect from getting hit and from being seen for the most part but exposes to contaminates every time it goes through a cold start up and too some degree all other times as gravity does its thing. Placing in the lower 5 or 7 oclock position means the sensor is in the lowest part of pipe and becomes a water trap. WATER ??? what the hell is this guy talking about, water ? At cold start up condensation occurs from the cold to hot transition. Yep it is hot enough to dry out in a reasonable time but it is not only the few CC's of water but the crap it washes to the new water trap in the system that will lessen then kill the sensor after time.
Go too any of the aftermarket kit installation instructions and read the warnings about placement. The common area of multiple cyl. EX. gas is best as it gives you an average and not just the 1 cyl. it sees if in a single tube = BUT.
After several installs and seeing first hand results I found the rear tubes on either side it fits best gave me the most accurate results. I have installed dual sensors on a car in the rear tubes from concern about single cyl. readings but in the end found they were always so close to each other just not worth trouble and expense. A single FAST sensor works for me in #8 as a rule. Good luck and have fun.