Every auto parts store in the world carries freeze plugs. I find it hard to believe you got turned away by NAPA. It’s not even an odd size. You can use either one as long as it is the right circumference but as bartamos said the one on the right is easier for a novice to install.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
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