I finally made some progress on my 93 Yeti ARC. It's still a ways to go, but it's starting to look like a bike instead of some neglected Aluminum.
I'm going to go with a mostly M900 XTR build with a few Ringle/Grafton pieces. At the present it has Ringle 3DV hubs and skewers, Grafton 3DV Speed Controller brakes and a Ringle 3DV Moby post. I may put on some early Grafton Speedsitx cranks in 3DV, but I need a longer spindle BB and have none on hand. The 3DV ATAC stem is temporary as I'm waiting for a matching turquoise FTW modified version to arrive.
The Manitou 2 needs to have its steerer shortened, new elastomers and a different brake arch with a cable stop (which I fortunately have) and the Ringle twist skewers will be swapped out for the old school holeys. Otherwise it's almost there. Maybe I will put on that Grafton crank after all.