Ain't no rumor he 100% dissed Pac on a freestyle with Ja Rule back in 1996. It was the same last verse as Get At Me Dog but he took out K-Solo's name and said 2Pac and dissed the west coast
But Suge had tried to sign X around 1994-1995
X has always had some weird unreasonable hatred for west coast. Outside of him doing the intro & outro on Game's LAX I'm not sure if he has ever worked with a west coast artist.. plus there was this:
Q: What’s the difference, if any, between East Coast hip-hop and West Coast hip-hop?
A: Talent.
A: You know, there’s talented rappers everywhere, and one West Coast rapper who I like and respect is Game, because to me, he has a New York style.
But I don’t like a lot of West Coast rappers. West Coast rap is too laid back, too focused on marijuana with all the blunts and lowriders. There’s nothing honest. There’s no trouble in it, you know? There’s no hardship in it. Everyone in L.A. that raps has a lowrider and a fat blunt. Back here in New York, we’re still walkin’ and still smokin’ dirt, you know? There’s no hardship in their rap, there’s nothin’ to make you say, “I can relate to that.”
I mean him saying "there's no trouble in it" or "there's no hardship" can somewhat be explained by X being a crackhead, but obviously he's hated west coast since the mid90s for some reason