Personally, I think the no tip look works the best on the 3rd gens (and 4th gen Camaros). I have seen some that make a nice pair of slash cuts look good, but I just think it breaks up the lines of the car. Mufflex sells 3.5" and 4" systems that you can option a single hidden tip on - shouldn't be hard to have any shop with a bender do the same thing for you:
Sorry for the small pic...too lazy to search for a larger one.
- Justin