Looking for 639-667 with working duel arena

edit: realized there's a sticky for this, but it seems kind of inactive; pls close if this is redundant with the sticky

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Hey, anyone know of either a hosted server or a downloadable server+client (I'd be fine with hosting it myself) where I and a few friends could go and play around in the duel arena?

I think that the best deob for this would be 639 or 667 - maybe 614- but I'm a bit out of the loop on rsps's (600+ deobs were rare when I quit scape). The time period I'm looking for is mid-late 2011 (post free trade, before or shortly after the release of ganodermic and polypore), and ideally the combat mechanics will replicate those of actual rs as exactly as possible

Thanks!

Noobmage