I've talked to the guy that has the John Deere Brat from WCSS10.
He's doing a Zuki case and cut the tunnel to clear it with the trans in the stock location.
Says the sheetmetal surrounding it will make a nice arm rest. And it's tucked up in with the body. Nothing hanging down.
mine is all protected like that too, but I wouldn't think the sheetmetal inside would be tall enough for an armrest? but could be different for a gen1, and if he clocks it or not....