Fan blade

I only have a '69 parts manual, this fan blade number isn't there. #3462 186, it has aluminum blades. My friend says it's for a 426 Hemi. The blade in my '69 parts book says # 2863 215. Can someone help me out? I will use it regardless, it fits. Just trying to settle the argument.
#3462186 is for 1974 B and C body with 318 360,400, and 440 7 blade with A/C 20" diameter.