Ok thanks for this infoI am surprised that nobody responded to you post for the bottom panel. Just wanted to say that any bottom panel from the 18 thru 23 series will fit your KDS18C machine regardless of the specific model of machine. They were all the same.
Hopefully, this will expand your search as you may find a donor machine.
And BTW, the "C" suffix denoted that it was a Canadian Spec dishwasher.
What colour would it be?KDS 18, my candidate for best Dishwasher. I likely have a panel given I never throw anything away, Problem is on West Coast (Oregon) so shipping costs. Let me know if you want me to check.