I have an electric pusher fan on my 78 Brat, but would feel a little more comfortable if I also had a mechanical clutch fan (if it's feasible). I would need the whole assembly.

 

I also need a radiator comb. Some of my fins are bent!

I have a 78 4WD wagon and don't run the mechanical fan. I made sure my cooling system is in good shape, and use a radiator overflow bottle instead of the atmospheric dump tube. I live where its hot and do a 3mile 7% grade climb at 60mph daily and the car barely warms up.

My same wagon typically runs cool too. But sit in traffic and eeeeek !!!!