You are that person who likes to personally dump their ROMs themself.
That may not be easily doable with TMZ.
See, the game is technically 2 ROMs. One is a 1MB ROM with the SNES program, and the other is a 4MB graphics ROM for the SPC7110 chip. I can't remember what happens if you try to dump with a typical dumper, but my guess is you get the former and maybe some part of the latter (as I read some part of the SPC7110 ROM gets mapped to the SNES CPU, but not all as it uses a memory mapper). To properly dump it, from what I understand would require a custom dumper able to load code into the SNES to take control of the mapper and then spit it out.
(it's the same reason as, from what I read, Mega Man X2 cannot be dumped easily but X3 can. X2 is split on two ROMs and one is disabled and it requires being able to control the Cx4 to turn it on before it can be read.)