It doesn't matter how large you sweep the curve. It's the final mounting point that limits how far the cable can travel. And since the fitting on the end of the cable is 3+ inches long, and the throttle arm moves about 4 inches, that's 8 inches minimum of reach I need to attain. More like 10 inches, actually, when all is said and done.
In addition, the large log intake interferes with the stock foot feed lever.
I just ordered a Lokar pedal to at least simplify the pedal end; it comes with it's own anchor point. And I will build a bracket that achieves the reach I need, come hell or high water. This way I can come at it from the driver's side, which is a much simpler deal as well.
BTW, I've been using an el cheapo cable up to now, and it has disintegrated in the efforts to get it to fit, so I've ordered a Lokar cable as well.
The other thing I've done is given up on retaining the kick-down cable, so will shift it like an inline manual until I get a more permanent fix.