Man, I'm totally into the cycle cars! I've been jonsein' to build one with a trouble head engine for some time now.
Nice! I'd love to see that! Funny you say that, I'm actually thinking the other direction - I have an old VW Bug that is rotting in my parents' driveway and I'm thinking of building a 70's style chopped out trike with it.
That would be awesome!! I really dig the VW trikes when done well. I'm sure you would do it justice.