Splines are not the same as the Pantera, they're a 16.5mm 36 spline on the output and GM's funky 23 spline on the input. I had to cut them down, sleeve them and then pinned on some new U-Joints that would work. By keeping the entire assembly in the front subframe, I was able to work the set up so I could move the steering intermediate shaft up, which means I have a lot more foot room than before
The EPS power controller is from EBAY, a guy in Portugal makes them and sells them. Its adjustable, the pot goes into the speed signal input of the OEM computer and tricks it, that's how you get the adjustable power assist. Plus it has an adjustable pot on the circuit board for the torque sensor sensitivity.
Been trying to figure out how to take one of those cheapo GPS speedo receivers and work it so that I have a speed adjustable power assist, plus overall assistance control.... but I hate electrons and not quite sure how to turn pulses per mile into resistance without a basic stamp set up or Arduino (which I haven't messed with).
I've got less than 400 bucks in my set up including all the U-joints and shafts, controller, etc. I rather build then buy. Every kit I buy I end up having to mod anyway to get it to my liking.
The whole set up is connected to a custom low bump steer steering rack and mount. Car should drive much better (hopefully).
Equinox's have dull steering, but I'm hopeful that's just because of the full power assist, with reduced assist hopefully its better. If not, I'll yank the unit and replace with a straight DD shaft and I'm just out a few hundred bucks and some time.
Dave