Ok, so here's the pictures I promised:
Now for the review.
It sucks!! With that said, I haven't given up on the idea of a hydraulic e-brake.
The e-brake does work and locks the rear brakes but requires a very firm pull on the lever and the top of the handle moves about 4-6 inches, maybe a lil more. It takes way more effort than I anticipated, and definitely more effort than the ones they have in WRC. I dont know if the cylinder is the wrong size, or it needs a booster or if the ones they use in WRC are maybe solenoid driven or assisted.
The unit I used is made by a company called CNC, and it is designed as a staging brake for drag cars.
Rhys Millen has an identical unit in his GTO though, but all the rally car units I've seen use a Girling style clutch master cylinder with a bracket and a lever actuating it.
Here's some examples:
-Sean