Make sure if you use that kicker sub that you wire the VC's in series. I doubt that pioneer amp can handle a 2ohm mono load (which is what you get if you wired the 2 VC's in parallel).
If you want to maximize that amp, get a SVC 4ohm sub and bridge the amp to it. That'll give you 600W to it at a 4ohm mono load which should be safe for it.

Or if you want more noise than one sub can give you, get two 8ohm subs(rare, but you can find them) and wire them bridged in parallel. Or even three 6ohm subs non-bridged in parallel. There's way too many combos really. How many speakers you want?

99GS MT | Star Stage 2 | GC coilovers | HurriganeGS tie bars | Tokico Illuminas | 17x7 Enkei RS5 | Baer track brakes |+