Pics? Its an alternator. The only was was dull, the new is pretty!

I actually had to swap it out again for another. The first was noisy.
Anyone know the difference in BOSCH regulators? I am using the one provided with the unit, but I have one hand for the 60 amp alt. Would it work on the 110 amp alt? Each one I have, from my first faulty to the newest on the 110, has a different part number.