Finally finished!
Frame: 19" 1990 Yeti Ultimate U167
Fork: Answer Accutrax
Headset: Chris King 2Nut
Stem: Yeti/FTW
Handlebar: NOS Answer Hyperlite
Grips: ODI Attack
Brakes: NOS Shimano XT M732
Brake Levers: NOS Shimano XT M733
Shifters: NOS Shimano XT M732
Front Derailleur: NOS Shimano XT M735
Rear Derailleur: NOS Shimano XT M735
Cassette: 7 speed freewheel
Chain: NOS Shimano HG91
Cranks: Bullseye 2nd Gen
Bottom Bracket: New Bullseye outboard
Pedals: NOS Shimano XT M737
Hub Skewers: Ringle
Rims: NOS Mavic MA40 36 hole
Hubs: NOS Bullseye
Nipples: Sapim
Spokes: DT Swiss
Tyres: NOS Tioga Psycho
Saddle: NOS Selle Italia Turbo
Seatpost: Shimano XT M730
Seatpost Binder: Ringle
Weight: TBD
More to come...
A big thanks to Gil, FTW, ameybrook, Yetified (VRC, who suggested it's a '90, not '89), and anyone else with whom I consulted with during the build.