Here's also what I used for reference. I like using restored versions of SNES songs and sometimes songs used in remakes. Makes it easier to pick out all the parts by ear. https://www.youtube.com/watch?v=NN1BGAPabt4
I started with a midi rip to get the notes. Added pitch bends, EQ, effects, pseudo-sustain to synths. Redid the drums from scratch and layered three different instruments to get the dirty bass sound.