I'm seriously considering it for my 2014 GMC Sierra 1500 5.3V8......but dont want burnt wiring or other troubles down the road.
Having now read everything available online about additional amperage alternators vs OEM (mine is a 150amp), the general consensus seems to be that switching from a 150 amp to a 170 amp alt will not hurt a stock vehicle with stock accessories/equipment. If anything, the switch would/could prolong the life of the vehicles battery due to the availability of voltage rather than the battery needing to draw from its built-in reserve to cover any increased demand.
I'm also considering upgrading my headlights, taillights, and interior dome-courtesy lights to LED's. An Alternator upgrade may help with this as well.......but then I read how an LED bulbs actually draws LESS power than stock bulbs ! Arghh!...will do more research on this topic before melting my light housings.
If ANYONE reads this and has some input, I'd appreciate it.