Hey so I just barely installed some brand new LED tail light inserts from CJ Pony Parts.
Link: Mustang Led Taillight Assembly Each 1967-1968 | CJ Pony Parts
A while ago I watched a video on how to install them and I remember the guy installing them saying that you had to replace the turn...
Thought I would post these if anyone is interested in them. I think they are great looking, comes with Built-in Sequentials and smoked. I plan on getting a set.
Here's the link for them LED Tail Lights with Built-in Sequentials