I'm pretty sure thats what I have on my 68. They looked great in the early 90's when that was the style, but after seeing all the cars lately that are running 16s and even 17s, I am probably going to upgrade soon. They just fill the wheelwell better.
I might be able to send you some pics, but I'm leaving town for a few days tomorrow am.
i currently have a 275/50-15 on the rear of my car and have run a 265/50-15 in the past. they are a little too wide for a 7" rim IMO but my best friend ran my old 265/50-15's on the rear of his 79 Z-28 with the factory 15x7 wheels and they looked ok.