Matching Numbers???

A few eeks ago, I bought a 64 Dart GT convertible with a 273. At one point, I read that they only buily a little over 2,000 of these.

Question #1: Can anyone confirm this?

The FABO vin decoder confeirmed that the car came with the V-8.
Question #2: How do I figure out if the numbers match?
The vin # = L442714822
The only #'s I see on the block are a series of raised numbers
above the oil pan - 2465330-4 (does the "65" mean that was
the year the engine was built?)
Please enlighten me.
THANKS!
P.S. For those that advised me about my overheating issue, I bumped up to a bigger fan and a bigger spacer, and that seems to have done the trick (knock on wood).