Looking for data on how much better, if any, one of the subject aircraft
performs with a Warp Drive or similiar prop.

We can't install anything but certified wood props (or expensive aluminum
ones) on our old birds. Thus, what we need is hard data so maybe we can
approach FAA to let us convert to carbon fiber props.

Information on Powerfins, Ivoprops, and anything else would be helpful too.
Thanks.