- 'SAE-TSIBR-67TK' - '67-'68
- 'SAE-TSIR-70TK' - '70-'72
However, I could never figure out WTH the difference was! I compared them very closely several times, and they certainly appeared absolutely identical, aside from the different number. However, I was at the shop today getting things cleaned up and set up for my next major bodywork assault (hopefully next Sunday) and also taking some pictures. Well, I picked up one of each of those lenses again and was looking at them and saw a detail that had gone completely unnoticed the previous times! Check it out:
![Image](http://www.fordification.com/board/taillight-lenses_67-vs-70.jpg)
Do you see it? The '70-'72 lenses have a pair of built-in water drain holes along the very bottom edge! THAT'S what the difference is....and that's the only thing, too.
Funny how sometimes even answering a stupid little question like that can make your day. I'm happy....another puzzle solved.
![Very Happy :D](./images/smilies/icon_biggrin.gif)