So Funk/Harbottle provides full measurements these days? I just looked at the Harbottle tab on the Funk sub page and didn't see any...
No, there aren't. None that I've seen.
There are two Ridge Drivers that have been measured by Josh, and those are what Cody is calling his Drivers. Cody has also expressed willingness to have his stuff tested by a reputable 3rd party.
He and Nathan work "together," loosely, in that they share a space and philosophy. Cody is taking this forward pretty handily by all accounts.
I watching with great interest.
Other Harbottle owners are saying very nice things, and DIYers using his Drivers are likewise impressed. In the research I've done, the limiting factor seems to be Amp related and those that can supply a very clean 3000w per driver with a capacitance bank that won't wipe itself out on a single note seem to prove that his Drivers are the real thing.
(It seems that Nathan works toward the beautiful craftsmanship of a finished cabinet where Cody is focused more on the Driver Performance. Both are excellent product, and I don't think that what Nathan builds is in anyway limited by his focus on cabinetry.)
One last note: going back to the Data Bass review of the Ridge Drivers, Josh pretty much said that these things can handle a lot of power before showing signs of strain. 2" point to point was well within limits, and around 2.75" ptp is when they started showing signs of strain.
Cody has an Xmax guarantee and encourages modeling his drivers not just to Xmax, but to withing 2-3mm of Xmech instead. By doing this, he says you will be able to get the absolute most from the Driver based on what you can give it in terms of cabinet volume and power: all part of his overall philosophy.
He has posted some video tutorials about using his Range Method to model his Drivers, all within the parameters of his published guarantees.
I would love to see somebody get his gear and test it properly! I think it will be quite different from the status quo.