This is someting I never snapped a pic of.
There cant be any sharp turns or kinks in this cable.
The original floor pan had 1 small metal strap welded on under the drivers seat area. It's a few inches ahead of the attach point on trans and inline with the hole through the firewall. So the cable is just loosely held here close to a slow raduis 'L' turn. There may have been a 2nd strap forward, under the left foot well area, near the bottom of the firewall, I forget. At 63 inches long, there isn't enough to sag much. Some aftermarket vendors were shipping 80 inch cables for a-body applications. I don't know how one would handle that extra length.
Most important is under the dash. The cable needs to route to the instrument as straight as possible. Left, right, and inward forces from this cable is what kills speedometers. Clean that square port on the back of the instrument so the cable slides in to the stop collar without pushing on the instrument. I'll take the time to clean to a slip fit at both ends. Hope this helps.
