Another Alternator Question

With a 140a alternator, you're looking at about a 6 ga wire from the alternator to the battery (or starter relay).

I have a Delco 12si on my car (only a 78a version), and at least before the electric fan install (haven't driven it at night yet) it was more than enough. I can't imagine that you'd need more than 105a for anything you'd be running on these cars unless you have a competition stereo. I have a 2012 Chevrolet Cruze with power windows/locks, electric fuel pump, fuel injection, vacuum pump, electric fan, a/c, 250W stereo, heated seats, etc...and it only has a 120a alternator. My '04 Colorado and many older FI cars only have 100-105a alternators.