I can add to that list the following for my Tourer:
Radiator, pods and engine guards - plus I/S-specific highway peg mounts
Rear brake caliper and bracket - An I/S wheelset accompanies the brake hardware come next tire change.
Trunk, with speakers - They interface to my Yaesu FTM-10SR, which is mounted under the trunk body.
OEM I/S Passenger Peg mounts - my lady friend's idea. The bike's Cobra passenger floorboards didn't work for her and the Tourer's OEM peg mounts put the pegs too close to the bike for her liking so I went with the I/S parts.
There's a Two Bros triple clamp in Ye Olde Parts Stash. When I swap a set of Traxxion-converted fork tube assemblies onto the bike I'm going to replace the OEM triple clamp with the TBR part. Finishing up the front-end bling is a set of VTX1800 OEM chrome fork covers. The space between upper and lower clamps is left bare to provide attachment points for Memphis Shades mounting hardware else I'd build a chrome cover for that area too.
"Tourer's OEM peg mounts put the pegs too close to the bike for her liking so I went with the I/S parts."
I didn't know there was a difference. good to know