Not Carfax, but info at least (like how it was configured stock):

1967 Dodge VIN breakdown

Another decoder on Allpar.

I don't think these still apply, but anyway: Recalls

I've tried looking up some 60/70s-ish GMs and found sites that will find out info like Carfax for a fee, but I haven't found any for a Coronet...

Goin' Round Traffic Circles @ 50Km/h!!! \m/ -- 1998 E0 SVT #2119 of 6535 \m/ -- 2003 Sentra SE-R Spec V