if they advertised as 72-76 then that is the first problem. 72-76 is not all the same. The panel you have there is correct for 72 and 73. 74 -76 changed marker location because the tail panel changed ......74 and up had the body mounted tail lights. so it looks like they stock the right panel for the earlier cars. I have heard of this before that these re-pop companies assume that they are "all the same" from 67-76 in some case. which is very ignorant for as many changes as these cars received from one year to the next. You might have to make a thread and see if more 74+ dart builders here on the board had better luck finding correct later gen dart parts.