Can't be done? Woofer Install in 02 Screw
 

I have two JL 10W0 10" woofers and an amp I'd like to put in my 02 supercrew. I had these in my last truck, an extended cab Ranger, and they took up the entire backseat. I was OK with that because the backseat was useless anyway. I went to Car Toys today to look into getting a box to mount the subs in, and they said I can't do it. They claim there is only room for one 10" under the seat, and he'd have to make a box for that at around $300. Is this guy right or not? I thought I had seen pre-fab boxes for two 10"s under the seat of my truck for much less. I understand that there isn't much space and the woofers may not be sound there absolute best, but I'd be OK with just a decent sound out of them. Can anyone point me in the right direction?

Thanks. It looks like they have several different approaches that will work for relatively inexpensive prices. Any idea why the guys down at Car Toys said I couldn't do this? Are they morons, or do these boxes not perform very well?