but I can tell you that the
Harmon Rocket is a partial kit that combined with parts of an RV-4 kit get you something along the lines of a clipped wing RV-4 with a six cylinder engine. You don't take off, you launch, hence the term Rocket.
The
F1 Rocket is a complete kit that was imported from Czechoslovakia, and there is the F1 evo as well, both six cylinder tandem hot rods that will be in production again I'm sure.
Hans