Looking for WoW Cataclysm 4.0.6a (13623) Full Client – Repack Project

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Hello everyone!

I'm planning to create my own World of Warcraft: Cataclysm 4.0.6a (build 13623) repack, and I'm currently looking for a complete, working client for this specific version.

I'm looking for:

• A complete 4.0.6a (13623) client, preferably enGB or enUS.
• A reliable download source or archived copy.
• Any advice or resources related to developing a 4.0.6a repack.

My main goal is to recreate the original Cataclysm experience from early 2011, especially the PvP and PvE content from that period.

If anyone still has this client or knows where I could find it, I'd really appreciate the help.

Thanks in advance!