I ran mine right through the floor in front of the shifter, then looped it under the car. It worked all last year with a Pro Ratchet, I went to a Pro Magnum (had to change to add electric shifter to my 'Glide).It works fine. I also had the same set up in my Duster a few years back, with a front cable exit B&B shifter.
It comes out by the rear of the trans, no problem.