Use a 15048172. They are slightyly longer and actually work better. We rerouted all our clutch cables to go through the oblong hole in the frame rather than over the frame. It reduces the sharp bends in the cable and extends cable life.
I found a company Mako Hose and Rubber in West Palm Beach, FL that makes custom GM Clutch Cables they are a cable craft assembler. Here is a link to the product data page I used: http://www.cablecraft.com/pdfs/Pull-Only%20Clutch.pdf