Early b-body shock tower interchange?

I'm looking for a passengers side shock tower for a 65 b-body to modify (invert)for valve cover clearance. Would the shock tower from any 62-65 b-body be the same or were they change at some point? Also, I have heard rumors of someone modifying these as the original Race Hemi towers were, but have never heard who it is or what it costs. Anyone have info on that? Thanks

63-65 should be the same. I believe it was late 64 when the shock towers were modifyed for the hemi.