Questions about C-bodies

I have 3 1965 Valiants & yesterday we accquired a 1965 Dodge Polara. I'm pretty sure that year they were C-bodies. I have a couple of questions:

1) how do I find a fender tag decoder for the 65 Polara? Most of the places I've looked don't have much info on the 65 Dodges

2) The paint code on the fender tag is WP2. I know the W is for White but what is the P and the 2 for?

3) There is a strange looking set of steel plates right behind the front bumper. Each plate is attached to the frame and is about 1 1/2" back from the bumper. If you kneel down in front of the car you can just see the bottom of these plates. The mechanic said he never has seen plates like these. (I took photos but I have no idea how to get them onto the forum.)

4) Here are some of the fender tag #s:

right before "1" is 99 which I think is special order (it has a 383 2bbl)
1 = 2
3 = 9
A = 9
B = 9
D = 5 this one should be for the 365 torqueflight automatic
E = 5
Q = 1
V = 3
X = 6

SD is 603
BDY is D12
TRM is L4X
PAINT is WP2

Any help would be appreciated!