Engine mounting: Hole in frame (had hole already) naughty, naughty!, but has held well. The rubber hides the previous holes that were drilled (see pic of "naked" bike.
Helmet cam: Fits the phone I'm using better, too much vibes if mounted on frame.
Gauges: $3.50 speedo. $11 tacho (reads half!)
Plug lead: Reduced speedo interference, original fell apart. $6