head unit options for an 01 silverado

so hears the deal im not to fond of the stylish stereo installation kits that they make for a single din head unit in my 01 silverado id like for the head unit to be flush with the bezel and fill the spaces above and below the stereo, so what i've come to assume is that i can get an 03-06 dash bezel then have my choice of double din head units, is it just that simple? i understand i may have to modify the metal brace that runs accross the rear section of the stereo slot.