273 4 bbl Question

L45
273 v-8 Dart GT convertible bright red with tachometer
(So the third digit in the VIN is 4 (1964) or 5 Model year?)

They do list a 235 hp 273 v-8 but engine code is 31 for 1964. (52?) AB

http://www.blight.com/~tony/abody/vindecode.html

So the VIN is L44510####(# = plant sequence number)?