Skol

I have a 2013 Grand Sport, with LS3 engine obviously. I am doing the z06 manifold upgrade and the last thing I need to order is the O2 extensions. I know through reading most the threads on here people either modified the stock harness or used 24" extensions, but I'm having a hard time finding the 24" extensions. Does anyone have a link or a Brand with a part number? I found but they look different the connectors look different than what I've seen in people's pictures from doing the swap. They are BBK part number 1116, 36" GM O2 Extensions. Please let me know. Thanks. I'm really hoping to get this done before the Corvette Museum 20th Anniversary Celebration.