XTX Instrument panel extension cable?

[brs077]

Hey all. Google isn't being too useful except to purchase an MTX wire harness. I've got a 2013 xtx w/ a steering column gauge relocate/IP Vent, and a Lake Effect riser, and soon an OFT relocate. I've tried to reroute the IP wire harness but it's a solid 5" too short. The OFT may help a bit, but I don't think it'll be enough.

Does anyone make an extension? Or, does anyone know if the connectors are available so I could make my own? Worst case, will the MTX cable make any difference?