60 degrees? You need to get a protractor out and see what 60 degrees is. Last I looked the TB sticks out of the motor at 90 degree angle from the side of the car. Since the Straight Shot runs nearly parallel to the side of the car (no not exactly parallel, but it's pretty close to parallel) a 90 degree (or so) turn is necessary somewhere! I'll agree it may not be exactly 90, but it's much closer to 90 than 60.
Why would you say that C&L meters and tubes are more apt to run lean as opposed to the Straight Shot? Do you have info to back this statement? If the MAC is similiar to the C&L (measuring 85mm thru the entire MAF, just like the C&L) and it uses the stock electronics, where would this difference be created? I'd believe that they would be very similiar in their leaning tendencies.
These so called performance MAFs are a joke - they are just expensive aluminum tubes, using the stock electronics, that fool the computer and lean the motor out. The OEM MAF is not restrictive and is good for 350 HP (or more). If you want to make power by leaning, do it the right way and get a dyno tuned chip or handheld programmer.