It doesn't matter how long you'll be at the shop. Keep your receipt and the warranty goes with you. Even without the receipt, it can be warrantied by a NAPA store that wants too. At my store, if you don't have documentation, then warranties are attitude based...

And recently, NAPA changed suppliers for rotating electrical. We now use BBB, the same company that does just about everybody elses stuff. The only difference I know of, is that NAPA specs a higher percentage of new parts in their remans than other companies that use BBB...

And, last time I checked, Dodge and most domestic OE's used Cardone for their reman rotating electrical...