spkrman
http://www.thecaraudiobox.com can make boxxes pretty well for a type r. i know people here rag back and forth about it but if you wanted to try 2 12's its not that horrible in sq (although i wouldnt call it sq lol) and they hit pretty **** hard. i would bet with the amp you have it do in most cases at least a 145 (seen him do a 150 even) on the spl side of it . there are other options as well. if you want to try re talk to inhumanacura and moe_lester they have that covered pretty well in streetable applications as well. key point i make with who to talk to is they generally know the product you want inside and out and know how to get it loud (if thats what you want)