Need Help Harmonic Balancer

Using the correct year rad for the car vs correct brackets pulleys for the engine... do your research and pros/cons for both. I'm a "stock" type guy, but it may be "easier". To go with a 70 and up style rad as the 70 up brackets/pulleys etc are easier to find and cheaper.
FYI with our 67 cuda I bought a new 67 style water pump and the machined boss areas for pwr steering pump and for the alternator were off. I had to grind them down. Pain in the arse. I kept my original 67 wp in case I got it rebuilt.
Good luck, nice looking fish!