There is a thing about building hybrid bikes - I like the bike to at least have some sort of authenticity. A Seeley Jawa probably never existed. But Manx framed Tritons DID exist in the 1950s. And Seeley Commandos certainly existed e.g. Gus Kuhn. You can build a bike out of the best parts and still find it is worthless if you come to sell it. To my mind, the most worthless Triton is the unit motor in the Slimline frame. They are nothing bike, there is not anything right about them.