I have a '66 Coronet 500 Convertible but I can't decifer the whole fender tag. What I get is that it's a Coronet 500 2dr Convertible with the Premium package. Nothing else makes sense to me. I used a VIN decoder from oldride.com.

Here is what my fender tag reads:

a b c d e f g h I j k l m n o p q r s t u v w x y z

a=4
b=1
c=5
e=1
r=1
y=2


C0908292 WP27 P4W SS1 W


According to these numbers the engine code is "P" but there is no "P" in any of the decoders I've looked at..........