I have a Spugen Single Canister. It is on their website for $390.00 + shipping. It is beautiful and it is LOUD. My brother drove it over the weekend and could not stop talking about how good it sounds. If you don't mind a bit of volume and want a bit of an increase in power, this is the way to go, IMO.

Take a look.

 

Thanks for the reply, but I am stuck on the dual setup. good luck selling it.