The Legend was shod with 17 inchers fore and aft, and the seat was cut down by an inch or so, resulting in it having the lowest seat in the Triumph model range at that time.
The Adventurer was basically the standard Thunderbird(with 19/18in tires) with a "Harley-esque" kicked-up rear fender.
And regarding the Williams-built Legend...
I saw one for the first time about 10 years ago while attending the Mid-America Classic M/C auction in Las Vegas. It was a beautiful example in close to a BRG color, and as I recall the hammer fell at about $15,000 on it.
