Quote from 429scottI believe G2 is the same as the Y2, both 4spd V8 cars only thing is G2 was the early rad(1965) and Y2 was the later(1965) 4spd rad.
QuoteI think they changed from G2 to Y2 in May of 1965 as I have a 3-65 G2and my friend has a 4-65 G2 and a 5-65 Y2.
Add to the two above it appears that G2 was replaced by Y2
But it appears that there was not a specific cut off as the information shows below
12/64 = C4ZE Y2
3/65 = C4ZE G2
4/65 = C4ZE G2
2/66 = C4ZE Y2
I've never seen a small tag (such as AMK offers) attached to the core of a San Jose Mustang
Anyone seen a "Z2"?