Port zombie that made out of parts into proper r6 zombie character

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I found really good zombie ai from 2015 that i would like to rewrite later for my own use, but here’s the problem: it is made out of parts and animated with script. Script is hard for me to read and i cannot find way to port the ai script into r6 zombie. https://create.roblox.com/marketplace/asset/201169102/Realistic-Zombie-AI
I need somebody to help port zombie ai, without spawning script, because i will make much different one for ported zombie ai.

day 3 waiting for answer. aaa…