I think he means that the V1 has much more proformance parts available. The sachs motor is pretty reliable motor, some have told me that it will do a good 35-40mph with little to no mods. (just what I've been told)
If anyone is interested, I'll throw the Fantic Concord XKE frame that I have that HAS V1 engine mounts on it! You can put the V1 mounts on this frame and have yourself a V1 General.