The king pins/steering knuckles look flimsy to me. Just some bent steel? Most trikes use a cast assembly. The frame looks robust, though. I agree, it looks homebuilt, although those are some pretty elaborate bends on the crucifix for a homebuilder to have made. I wouldn't touch it unless I was prepared to do some serious engineering and fabrication, because it is going to require the attentions of another homebuilder to make it run as well as a commercial unit.