Just bought this. Will dive in once the weather cools down a tad.
From what I have found, there is no pully system. The design of the cable end brackets have plenty of articulation.
It appears the length of the S-curve pertaining to how it fits under the body, and creating the round mounts (and how they then attach to the beam) seem to be the bigger variables.
Looks like there are several options for the release handle/mechanism, depending on how accurate you want to get. I am hoping that having that structural cross member right under the dash will make mounting it fairly straight forward.
