The crank mounted, self generating types we have on the two RE racers are, however, what I would consider to be an upgrade.
From an ignition point of view, the PVL and Electrex World are self-generating and you don't have to worry about slop/lash in the timing gears causing timing fluctuations, so I can see an improvement on two fronts, especially for competition use.
Not so good for a roadster Bullet, however, as the only versions presently available with additional lighting coils, and which fit the Bullet, produce a rather feeble power output, 50-60W.
A.