Looking for an AI Tool to help me retexture old video game textures.

Hi I am a modder who has been working on a very ambitious project for a couple of years. The game is from 2003 and pretty retro, using 256x256 and 512x512 textures. I have done a couple dozen retextures already but those are allways isolating certain parts of an image and changing the colour, brightness, contrast, etc. I have come up to a retexture that is not so simple. I need to actually paint detailing on now, and recreate some intricate patterning. In essence i need to make the 1st image have the same style as the 2nd. I need to make these pieces of armour match.