Tried it yesterday.
Confirmed working on my NTSC-J wii
my specs are:
NTSC-J WII 3.1V2 (updated from SSBB-J)
really really old modchip, did not bother to check, never updated, bought my wii modded.
what i did:
Mario Kart PAL (non-scrubbed)
-Region frii to NTSC-J
-Wii brickblocked to remove...