I looked through every valve cover pic i could find on google and didnt find any like them. The motor is definitely a 69/ 70. ( and i hope a 390). Will go get it tomorrow and find out. I am going to look into the info Hotrodpaint posted above more. I am also wondering if they are possibly either a dealer installed dress up kit or a factory installed item. Or maybe a marine application..? They are right and left and your right... they are kinda cool LOL. I have a 427 low rise dual plane 2x4 intake off a 64 galaxie that i will use on it if it is worth putting together.