Thank you KurtS and JohnW. for your input. The Camaro Forum on cooling systems is not informative at all about other than '67-'69 Camaro models and their specific engine. The 6cyl., the 327, the 350 and the 396 came in Chevy II's & Novas(in the same hp ratings that were in the Camaros). All I was asking about was that "did radiators of the same dimensions, thicknesses, and physical appearances" also come, or were available in, ChevyII's('66 & '67), or in Novas('68-'72), because of 'over runs' and were carried over to '70 & '71 Camaros. I have heard, but not physically seen in a car, that this is true. Checking old Chevrolet Parts Manuals however indicate that this was an option, possibly only used on a replacement basis at Chevrolet agencies(ie.- 375hp/396ci Novas).
In addition, were ALL '67-'69 Camaro radiators 'embossed' with the "HARRISON" logo(ie.- COPO cars). The reproduction attempt of the "HARRISON" name is not very close to the original, and leaves room for some improvement.