long story short my coolant return line stripped in the head so it was drilled and tapped with an AN fitting and i seam to have lost the the stocker. well next month a new head will be on the car and im looking for a new AN fitting that fits stock size so i can also run a stainless line for a little dress up. any ideas on the size?

 

morning bump

help?

 

just go to a junk yard and find an ecotec motor and take the fitting. I really doubt anyone knows the size of that fitting off the top of there head without going out and measuring it...