Welcome to the forum Adam !
Looks like a 1976 CV, check the serial number on right side of stern, should end with the number 76 and maybe a letter after it.
Color is blue flake with light blue gel, but you can't always go by colors for model years ...
I can post some pictures of my fuel tank, but would look for something lower profile then original, also when mounting tank I have been told that G/C mounted it off center to counter weight of battery on the driver side in stern.
Do you have a motor ?
With new transom wood, plate might be over kill, unless your going with a huge motor and jack plate.