I've been lurking on this forum for more than a year. Threats of being made invalid here cause me to post...
I don't have a trike, yet, but have plans to make a PTW-like, VW-powered example.
I have the front end completed in water-jet cut steel; it's a leading link with bearings in all moving pivots and a monoshock for suspension damping. I have the wheels, tires, fenders all around, motor and tranny. I just need to build the frame to carry all of that.
When I get the chance I will post pics of all the parts I have. It a collection (along a plan, of course) over about three years.
The real reason I haven't started to weld the frame is that I have a self-built dragboat I need to clear out to make space to work on the trike. All things in good time...