My '96 Classic has eyelets piggybacked on the rear dropouts and also up near the brake bridge.They are tapped.
Obviously for a rack, as there are no eyelets on the carbon fork for fenders, and I'm not sure of the clearance.
Not sure why I'd put a rack on it, but as I've not ridden it yet, never saying never.

I'm not a fan of the color scheme, with the decals and the yellow on the fork.
My endgame will be a black Ritchey fork and black decals, if any at all, and 6800.
Just like most of the other Ti bikes out there, I guess. They do tend to all look alike.

I would not drill and tap your frame holes. Even a pop rivet seems a better idea.
I'd find a bolt that went through and through with a lock washer and nut on the inside.
Easy on, easy off.