Anyone have an idea of how much a custom sub box capable of holding 2 ten inch woofers would be? Anyone got one?

The search button is your friend, really.

The Box Thread (http://www.rx8club.com/showthread.php?t=107089)

the easiest thing to do is go to ebay a do a search for "RX8 box" that is known as the zenclosures box.. it is sweet, cheap, and fits perfect. alot of people have them around here.

I have the zenclosures box. You can go to my last audio thread I started to see pics...

+1 for the zenclosures box.

Zenclosures is awesome. The construction is amazing and fit is perfect. You can purchase one of his boxes through Ebay. I ordered one of their boxes and asked for extra carpet to make a false floor to cover my amp. I used a piece of lexan as a window and blue neon to illuminate it at night.