Really the vast majority of them had them. I bought a 75 Camaro in 77 that had the same 14x6 style as my 67 SS 350. However most had the pot metal later plastic style cap that exposed lug nuts.Since he was asking about rally whhels i was referring to the 67-69 Camaros, which had rally wheels. Don`t remember any rally wheels on the 70-81 models.
Not really sure what style he refers to when he says 14x7 because the Monte/Vette style never came that way on anything. I have seen them in 14x5 and 14x6 with the later in both disk and non disk compatable. The ones you refer to did [although 73 still had pot metal caps] and so did the 5 spoke SS style.On the 73-ups i remember the oblong rectangular rallys with plastic center caps on the vast majority of them. Not the style he is referring to.
My 67 Camaro has been that way for 35 years. 14x6 on front with 15x8 rear my car came with the four piston caliper disk. If you want to talk about tight fit.Back in the early 80's my 68 Camaro had 14x6 disc brake rally wheels (1st gen style) that fit over the Chevelle (large) calipers.
I liked the look of 14" wheels in the front and 15" in the back.
Should be easy and cheap to get reproduction rallys that fit.