dude is your cat playing in the ****ing box? hahahah your obselete box doubles as a cat play pen...BRILLIANT!Get (2) Dual 4 ohm Type R's , Get a min of a 2ga. amp kit, get teh absolute kit from onlinecarstereo.cpm
For the box make it 5 cubes @ 34 hz.
Box specs: 36"x14"x26" The port will be about 6" wide and will be 18-19" long.
Amp: Planet Audio VX2200D, it does 2krms on birthsheet. It wil def push the R's to full excursion. Be carefull though, you can blow them with this amp.
This will flex windows of buildings, pm me for video.
Here is a pic of the 5cuft box I made for mine...