Help finding Tekkit 3.1.2

[TwixOps]

I am trying to get a tekkit 3.1.2 server running so a couple of my friends can play, but I am having troubles finding any clients that support it. The current launcher lacks any rollback features, and the tekkit classic does not work for it either. I would rather avoid having to download each mod independently, so any help you guys could give would be great.

EDIT:Oh, I already have the server up and running, I just need to find the client.

[theprolo]

use Tekkit Classic. The launcher does have previous versions, however you won't need them since 3.1.2 is the recommended build for Tekkit Classic.