The rotation (and rpm) will be correct; (Most) Scouts turned the other way, and have a taper for a sprocket instead of a pulley.
Please understand that this is an altered generator design, not a true alternator.
It is essentially an HD Model 65a generator made to fit the Chief clamp, and the armature journal cut to accept the pulley.
The advantages of a standard unit over the end-mount regulator model are not only the wider availability of replacement parts and a choice of replacement regulators (such as a Bosch mechanical or a concealable solid state unit, the best of which are CE's own CE-102), but it will not interfere with Chumme assist springs if you choose to accommodate a passenger.
The advantage of CE's proprietary end-mount regulator is that it allows a feedback circuit for protection of the armature. (A generator can not be used to charge a dead battery without overheating.)
The difference in appearance is that the standard unit doesn't look like a piece of UFO stuck on a classic machine.
My '07 price list shows the IN-2569 standard Indian 12v unit to retail at $237.21,
and the endmount IN-5000 unit to retail at $323.98.
The CE-102 separate SS regulator lists at $74.02, and is far better quality than off-brands (like Accell).
6volt versions are slightly more.
Most vendors seem to want to keep the standard unit a secret.
I have the original prototype for my '34 project,
But I want one of IndianFrank's conversions anyway.