DK Japan has 85 boards.
Nobody seems to know how Japan Set 1 is different than Set 2, though it's definitely not the same ROM code, because the checksum is different.
Japan Set 3 is the very first version of DK ever released to the public. It has the barrel board skip cheat and "How High Can You Try?"
I have been saying for years (mostly to myself...) that DK Japan is underrated and underplayed.
I love DK Japan! For no-hammer runs especially, it's unequivocally superior, since no-hammer is all about the conveyors and rivets, and all the barrel boards in the US version do is get in the way and add needless, dumb deaths.
I truly believe that THIS is the version that Allen should play to get his first kill screen. Seriously. He's way more likely to do it. And I can say, from personal experience, that kill screening the Japanese one increases your confidence to do it on the US version.
It's special to me because I got the no-hammer world record from Jeff Wolfe a month after he got it (though he beat it back a month later, and then CRUSHED it a few months after that, one rivet away from what would have been the first ever no-hammer kill screen on any Kong game).
Scoreboard for "Points":
http://www.twingalaxies.com/scoreboard/7090/46/33137/Scoreboard for no-hammer:
http://www.twingalaxies.com/scoreboard/7090/46/33138/600K is kinda like 930K on U.S. version. I was able to do it because I abused the hell out of the ladder cheat.
650K = 1 million U.S. That's what Hank got.
Phi Tudose got over 700K though on MARP, semi-recently, which is pretty much the equivalent of 1.1 or so on the US version. I don't think anyone will beat it. Dean could of course, but I don't think he has the slightest interest.