Thanks to a poster over on IWSTI, the following site gave me the part numbers for the EDM taller 5th and 6th gears:
6th drive: 32363AA100
5th drive: 32341AA350
5/6th driven: 32364AA070
at least I believe these are them- I chose "europe, left hand drive" in the menu structure. There was an alternate listed for the 6th drive gear as well, but no alternates for 5th and the driven gearset. Here's the 6th alternate: 32337AA030. Note that it did not call it a supercede.