I am not sure how much of an overachiever you want to be but I would recommend the big 3 upgrade by Sky High Car audio - 2 or 4 gauge wires for alternator, battery, ground, etc. This REALLY help me during my build I am getting an average 13.0 V while my truck is running (I added an LED voltmeter in my cigarette lighter location). As far as replacement, find an OEM alternator (DENSO) and not a reman. I promise you will not regret it. I hate getting aftermarket parts such as those unless I do a high powered one or something. The longevity is horrible as I used to see while working at Autozone for years watching them come back. You can almost go to a junk yard to save some aggravation and coin! Just my 3 cents .
Skyhigh Audio big 3