stock ones:
Early engine has air flow meter, TOYOTA wording on valve cover, metal plaque on plenum (TWIN ENTRY CERAMIC TURBO - cant recall exact words), TVIS (8 runners off plenum), ignition leads "loose" over valve cover. CT26 on turbo compressor.
Later (gen3) engine has no AFM, small sticker on plenum, plastic catch can, no TVIS (4 runners off plenum), ignition leads in plastic tube bolted to valve cover. Toyota on turbo compressor.
There are a few other items that escape me now.
Cheers