Not got one, but I have a viper. I went down to my local store, with my viper, wanting a hardacse for it - was think SG case probably, it ended up fitting in the strat hard case, which happened to be dirt cheap as well... I suggest you do the same.
Quote by TehJermie
you can get that toneblaster stack at the cost of your dignity.

Quote by silhouettica
fine, screw the cheese sandwich if you must...

Your best bet would be to go to any local music store. The Viper is such a weird shape that either you need a huge case or one designed for it.
Quote by tronsbasscool
This is my 5th account and I still havn't made any friends

My Rig
ESP Viper 1000
Crate RFX120