okaie, here is my set up, its did cost me a total of 340$ all included, and yes 2 10" fit and leave enough space for groceries, here is some picture, if you would like more info, just ask.
Custom Ported Box 14"x14"x32"
2x10" AudioBahn competition sub
MTX JackHammer JH300
Tsunami 2.0 Farad power capacitor
4 AWG power wire and ground
PAC SOEM-T 120 watts Line Output Converter (for the stock car deck)
I can post more pics if you want.