Correct 1969 chevelle alternator

[Kramer77]

Hey everybody. Quick question. My chevelle is a V8 A/C car built on the fourth week of January 69. Staring to buy period correct parts for it when I can. For restoring purposes. My research tells me the alternator I want to get is the correct part number 61amp alternator. It has 9A20 stamped date code. That puts it at the 4th week of January. Same week my car was assembled. Wondering if this would be ok or if it needs to be a little earlier dated. Part number is 1100843. Which I’m sure is correct. It is rebuilt. They want 85$ all together. Any advice/info is appreciated.

Thanks