I was on Crutchfield's site last night, and the radios they show that "fit" all indicated that modifying was required. I know that Meta makes an install kit specifically for the '07 Tundra to accept a double-din head unit (radio) [99-8220], but I don't think Crutchfield handles Metra kits, which may be the issue. They do carry Scoshe kits, and last I knew, those kits for the '07 Tundra were not setup for double-din head unit, only the Euro-din. That may be what's going on.