Which Alternator for a 69 Charger, 440?

[Back N Black]

I have the updated engine harness from yearone Description below. Single or double pulley?



HU197BM Engine harness modified for electronic ignition and updated alternator for all 1969 B-body models with 383 or 440 engines without Six Pack. reproduction. 

[Ghoste]

Do you mean single or double field?  If so (and I think you do) then I believe that harness is designed for the dual field alternator.