Question 1: Yes. Considering your alternator is only 4 years old and should still be in great shape.

Question 2: With those two amps, run a 4 gauge power wire from the battery to the trunk. Within 18" of the battery post, mount a fuse holder there. The fuse should be a combination of the Alpine amp's onboard fuses (40a) + the MBQ amp's onboard fuses (90a). It adds up to 130a, but I dont know about putting that big of a fuse...:thinking: I would wait on someone else'sinput on that

From the trunk, run a fused distro-block to the 2 amps. The Alpine amp takes 8 gauge while the MMQ can accept 4 guage.