There are quite a few cards for the MC28, here's a list of the one I know of.....perhaps Fontyyy will know of a few more??

Standard
P000 - ??
P010 - Avgas HRC
P020 - Wet HRC
P030 - Unleaded HRC
P525 - Rocket Fuel HRC (very rare)

I think there's a few more types, Matt's probobly seen/used them.

The only trouble is Honda Japan don't have any left. I have heard of a Japanese guy who can program a PGM to suit an existing card, but not sure if you can take someone elses card and re-program it to your PGM.