I once worked with a very friendly can-do project manager who did something very similar. He had a deployment project that was behind because the cabinet's PDU

I once worked with a very friendly can-do project manager who did something very similar. He had a deployment project that was behind because the cabinet's PDU needed an L6-30 and the row only had an L6-20. So he went over to Grainger, bought a L6-20 male connector, an L6-30 female connector, some appropriate cable, and made an adapter. If I recall correctly he'd calculated the maximum draw from the cabinet as right about 20A, so he was really bothered when the facilities manager absolutely refused to deploy with that adapter. (<cough>inrush?<cough>)