windshield washer spray nozzle

[copo]

I was looking up the part number for the windshield nozzle in my 67-70 GM camaro parts book, I noticed there were 2 part numbers listed for the nozzle.
# 3886973 -67-69 all except ducted hood.
# 3983947- 69 all with ducted hood.
Does anyone if there was a different nozzle used with the cowl induction hood.