I know they were different than the original ones. Does anyone know the part number or have a set that they aren't using/don't want. I know the taper on them was a little different and they were big...
I'm assuming you mean different than a non-Turbo Coupe?
The taper is 60° and is the same as nearly all domestic passenger cars so any aftermarket lug nut that has a 60° taper would work.
Brent
The turbo coupe lug nuts on the TC that I had were just much bigger than the stock small ones that came with my steel wells on my 88 base model. Was afraid with the softer aluminum snowflakes they might crack because the lugs were too small.