The triking has always seemed a bit off in design to me personally, the engine seems to large and bulky for the front of the car and some of the lines of the car just seem off to me as well. I do like the concept though. However, most of the cars (built at least) dont seem that much cheaper than a M3W.

http://designs.trikingsportscars.co.uk/fully-built-triking

Both the examples shown here as examples of fully built cars are equal to or over the price of a Morgan.

Shame I am unable to fabricate a car as I would love to make a three wheeler to my own liking from the ground up.