Need Some Paint help! Need to find these paint codes!

I need to find these paint codes for an engine color. got my FE all back together and need to repaint it. im making it look all stock under the hood so im gonna paint it the factory Yellow.

ive searched and cant find anything, any help is appreciated.

these are the codes
[FONT=arial, helvetica]Yellow (1972 GM Color code 52, Dupli-Color code DS-GM-167)[/FONT]

 

Sunflower yellow, a corvette color?? If so PPG # is 2338 you should be able to get a code for any other paint manufacturer from the PPG code.