Polished Quake Sounds?

I'm making myself a Randomizer; a wad that replaces monsters in a level with variants of them from the Bestiary, just for fun (and a little added difficulty).
One thing I'd like is a variant of one of the Quake sounds the Super Shotgun guy goes with; when he dies, in addition to his death rattle, he makes a thud upon hitting the ground. The problem is, it's like two seconds after, instead of shortly after like the bull demon's. Can anyone give me the sound effect with just the death sound, and not the thud? Thanks!