The nook over our fireplace was originally framed out for our existing CRT set and as such is only 43" wide. My plan is to install a new Hitachi 55" plasma unit up there that is 59" wide. The nook is almost 3 ft. deep. Does anyone have experience with what type mount (150 lb. capacity)might extend horizontally to take up that depth and hang the TV flush with the wall itself? BTW, totally comfortable with heat and viewing angle.

Thanks for the help.