I ended up with putting some of the red RTV on both mating surfaces. I'm giving it the full 24-hour cure period before firing her up. Here is my quick DIY video on it.
I found getting the alternator on tricky. I did use a 6" c-clamp and large socket to try and push out the nut/bushing that holds the alternator to its bracket. Once you do that, insert the bottom attachment points first and bolt it in lightly. Then go at the bracket from the top, since it can only pivot in one way. I used a rubber mallet to coerce it in and a screwdriver to align the bolt holes perfectly.
I used a smear of antiseize on the alternator cradle and alternator bolts too.