Has anyone installed a double din radio head unit in their truck in place of the factory 1.5 din unit? Just wondering about the modification to the dash that most manufacturers say needs to be done to complete an install. I don't want to have to cut up the dash behind the head unit to much, not at all really. I'd like to install an aftermarket nav/backup camera unit in place of my stock crap radio. Any thoughts? Thanks for any advise.