Tilting Motor Works gets my vote if you decide to trike. I have ridden a Harley trike with aftermarket rear independent suspension, a Goldwing with California sidecar set up and a Harley Roadking with the TMW kit. The first two where weird and uncomfortable as the back axle stepped unevenly over bumps. Affects my bad back quite a bit.
However the Tilting motor works was a blast. Narrower and allows you to pull allongside another bike at an intersection. Handles extremely well and brakes almost hard enough to pitch you over the bars. Went for a spirited 20 mile ride on the back roads of NH and came back wuth a huge smile. Still leans like a motorcycle and performs like one but more stable, corners better and stops better. If i am forced to trike do to health ir age conditions the TNW would be the way for me.
If your considering a Trike try thus one. **** even if your not, try one. They are a blast.
Directions ? That's only the Manufacturer's opinion of the way this should be assembled.