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


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..........

ASSuMEing the codes you put up there are under CAPITAL LETTERS using my decades old white book...

A,B = 41 = 318 poly 2bbl carb
C = 5 = torquefilte trans does not denote 904 or 727 , was there a 904 in 66 ?
E= 1 = Cleaner air package (commiefornia only mandatory)
R = 1 = AM radio
Y = 1 = Black convertible top

The long line of letters are actually small letters and the others with the numbers are capital. Is there a difference if they are CAPITALS?

Here is the VIN #: WP27E67177122