Ok, I have two questions regarding the install of my Infinity Basslink. First, I've read several posts saying that I should use a 4 gauge power wire. Infinity recommends a minimum of 12 gauge. Would an eight gauge suffice without sacrificing optimal performace? Second, I'm going to be using the line level inputs as oppossed to the rca's. Should I splice into the speaker wires before or after the amp? Would it make a difference? I'd like to complete the install this weedend so any advice would be greatly appreciated! Thanks!