I bought a 2008 Unibody Macbook Pro shell Wondering if the design of the motherboard inside has changed much since then? Or which (if any) models afterwards had the same layout? I just want to know which motherboard would fit into this shell without a problem. (I say shell, but it's everything inside without the motherboard) Would I only be able to put the same exact year and model motherboard back in? or did they use the same design up until a certain year? Thanks!