Question: Split a S3&K rom hack into disassembly

[FirmDaKitsune]

So, I have a rom I already moddified with Esreal Sonic Editor II, but since the app isn't able to edit title cards, I turned myself to disassemblies, my quesion is:

Is it possible for me to split my hack rom which is directly a S3&K rom (not a S3 alone or S&K alone) or will I have to find a way to put every color palettes, and the modifications I made to the level select screen into the already existing disassembly ?

[InfernoGear]

Tools aren't generally provided for that specialized as to prevent asset theft from other hacks, and doing a full disasm requires a major time commitment and understanding of M68K ASM, so you're best off recreating the changes you made before you try using IDE Pro on an ESE II hack.