Sorry, I know I ask for a lot. ^^;

I love this game's music from back in the day. The OST's HUGE and wonderfully arranged. 98 Arranged album has a scant few of the tracks, but it's just not the same, and I can't find this anywhere.

Help please?

Have you checked here?
Thread 64263

A yep. No dice.

Are you aware that the reason why the 98 AST only has a few tracks is because most of the rest of the music is found on the other KoF ASTs from 94-97? Though there are a couple of tracks that also are just on 98 (Art of Fighting team is a game track only and never released) or even on Fatal Fury (Blue Mary's vocal theme karaoke style). This should help your search.

You might also want to try the 98 Ultimate Match which was uploaded not that long ago.