Hey everyone i was looking at putting a LCD touch screen
radio in place of my stock 6 disc changer whats a good one
to use and can i wire it up to my steering wheel volume control
on an 05 Mazda 3

Been there,done that!...lol It's not easy but CAN be done!
http://memimage.cardomain.net/member_images/11/web/1571000-1571999/1571049_165.jpg
There are more pics of the whole install at:

http://www.cardomain.com/ride/1571049