Wanted 69 back up light assemblies or bezels

Just saying.....do you need a mid-length or long housing? There are 3 lengths.....alot of people don't know that, not even (i guess) the people that repopped them because they only offer the short and long!!!!! Early built '69s have the mid-length from what i know/have seen...... 2 of my cars have mid-lengths, plus i have a NOS set of mids(none for sale).