Rear suspension question

I've got a triangulated 4 bar with coilovers, is a rear panhard bar necessary?

No.

Thanks Bob, I was beginning to wonder if there was something wrong with the site...no new posts or replys since Mar. 8.

There is something wrong with the new server, we're operating temporarily on the old one. All these posts last night and today, on til the server is back up will be lost.