[Spell Mod] BG1-style Entangle

Is there any way to extract the BG1 version of the Entangle opcode (154) and use it to replace the BG2 version that unfortunately plagues my game? I really like the vanilla BG version, both for its graphics and because it only affected enemies, and would like to implement it in BGEE, if possible.

Also, if it can be done, what should I name the file before I paste it into my BGEE override folder?
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*Update: Since the original BG Entangle spell uses the same web entangling animation, I edited the colors in the .bam file to dark green and altered the BGEE .pro file so that it only effects enemies. I also got rid of the hideous, bright green glow that envelops those who are entangled and removed the plant/tentacle appendages that flail about during the spell. Enemies still have to save vs. spell every round while in the AoE or remain entangled, but your party may move about freely.

I've attached the RAR file containing the modded files. Simply copy and paste the files into your BGEE Override folder.

Thanks to @Wisp for the help.