Other way around for me, done it on rep, still need it on imp.
Give me a shout if you need it on imp, here or ingame:
rep: Budje, Bull-dog, kaliandro, Novesh
imp: Bider, Skitti, Gorix, Bazzor
EDIT: ps. I believe this was the one where 4 people had to press a button simultaneous, so you really need 4.