I found that someone else had posted
two videos of this hack on YouTube.
I couldn't make out all the Japanese in the decription, but I did pretty clearly see the english title "Super Mario Forever."
I thought "hmmm...could this be the true name of the hack?"
And sure enough, after Googling "mario forever.ips", I indeed found that some Taiwanese site had posted a link to a zip containing the Nestopia emulator, the SMB1 ROM, and the IPS patch for the hack.
Funny that one of the hardest Mario hacks on YouTube would share a name with one of the hardest standalone Mario fangames. XD
Anyway, I've repackaged it into a more legal form: a zip with just the IPS patch, and the readme that came with the hack...though, as said readme appears to be written in Japanese, I dunno how much good it'll do English-speakers. :p
Have fun, you sick masochists. XD
http://www.filespace.org/4matsy/supermarioforever.zip