I am trying to find a paint code for my light blue 1977 280Z. It has the paint code sticker but it is not readable. Also trying to find out about coolant plugs that the previous owner installed and what should be there. It is located on the foward section rh and lh side of eng, the one on the lh side is up high close to valve cover the rh one is lower and fwd. When I had to change the plug from a rupture cooland came out. Could it be a hose needs to be installed to connect the two together? The size is small around 1/4 inch diam. Thanks Rod