Good call ProdigyCustoms! Another thing to keep in mind is that once you go over about 130 amps that V-belts start to slip, especially under heavy loads. Once they start to slip, it just snowballs and gets worse. The idiot light will never come on since it's still in a 'charge' state or no fault, but you can quickly run out of juice.
CS130 alts also have a tendancy to fail from heat, and generally aren't a good choice for a hot rod that sees a lot of city diving. Ad 12Si or CS130D is a better choice.
You can spec an alt for something like a taxi, police, or ambulance, which has great low-RPM or idle output. Also remember that rated output is at shaft speed, not engine RPM.
Running an alt that puts out more than you need isn't a bad thing, since it reduces the 'duty cycle' load/percent of the unit, and it will live longer (when looking at it from a load perspective).
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1971 Lemans Sport 461 bottle fed daily driver
1971 Trans Am 474 blown EFI pro tour car
1972 442 W-30 clone
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