no different amperage and designs depending on year and model and engine
There is not any adjustments to be made on alternators.
same engine, same insides.
The earth is rocky but the saturn is not all the same
The voltage regulator on alternators of almost all modern vehicles (including all Saturn's), is INSIDE the alternator. When rebuilding an alternator it is relatively simple to replace the regulator at the same time you replace brushes, bearings and other components, but if you haven't done it before and don't have someone knowledgeable to guide you through the process, don't try to rebuild an alternator yourself.
O'Reilly auto parts sells reconditioned alternators. Check your local stores or the online store.
yes
Since the alternators are in parallel, the resultant voltage should be the same as either alternator - exactly as it would be if two batteries are connected in parallel. Voltage remains the same but current capacity is doubled. I would recommend connecting the alternators through a network that will balance the load between them.
yes
Physically, yes. However, where alternators differ, is in the produced, amps. If both cars have equal electrical amenities, then it will work.
Yes, all modern cars have alternators.
alternators are classified as stators and rotors
Saturn is the same in German.