Running two alternators

I usually replace my alternators with ones from www.mralternator.com  When I install them, I upgrade the wire from the alternator to the engine fuse block with a  1/0 gauge, and from that fuse block to the battery.  Then I upgrade the battery ground to a 1/0 gauge.  And I always put the car up on a lift and install a bunch of grounds connecting the bottom of the engine to the frame.  I use misc. bolts down there and you can't see them under the car.  Other then then the 1/0 to the trunk, that's all I change.  Like $20 for wire, all of the pieces are very short.  I haven't had any issues, and Mr. Alternator has a great product line and the quality is awesome.