i used pakscape and other quake installs to pull most of my q3a sounds into q2the armor chink sound is better in q3 imo so I pulled that right from q3, but i pulled things like rocket sounds from qw too also pulled mh sound and grenade bounce sound from qw... not that hard to edit paks yourself
probably a q3 demo you can pull the sounds from demo pak file would still have armor sounds and shit, just not maps and other fun stuff