contrary to most yes it can be done I dont have pictures of said truck because when I did it their was no world wide web to show off what you had done but I just did the same idea in a toyota pick up with 2 12" subs
I forgot to subtract a couple of my messurements but in the end the seats are right where I like them other then they cant recline as far as id like but I'm getting used to it
heres the link
http://www.toyotaminis.com/forum/showthread.php?t=5312