Trunk floor question again

Hi Guys, Hate to ask again but I'm still looking for a trunk floor for my 69 Polara 500 and am only finding 68's... I know there is a difference between the slab sides (Pre 69) and the (post 68) bodies, but I'm being told by some that the trunk floors are interchangeable... True? Your expertise would be appreciated. Thanks, Dave (One of the new guys)
Author: Davews