I've purchased 2-15" Kicker Comps, and i've only got a Alpine MRP-500.1 Amp, and the sales person, along with someone from crutchfield told me that it would be fine?. and also if i were to make one box for each sub (my trunk is weird) what would be a recommended Pipe size for the port? im wanting the box to be at least 2.8-3.0 cu.ft and i was thinking of just going to Lowe's and buying a couple peice's of PVC piping for my port insted of building a Slot port for less area any suggestions? the total area i have to work with is 15" of height, 38" of width, and 40" of depth.