Hi, Are we compatible? 6/3/1975 and 6/7/1975....thank you!

Generally yes. They have much in common, especially in personality. Also they can easily achieve a steady and affordable life. However, both of them are not kind of people who are willing to sacrifice for each other. As a result, they may feel apart from each other once upon difficulties.
My suggestion is that they need more mutual consideration to reach a better relationship.