I play both the original games plus the enhanced editions. I've always wanted to enjoy the non evil NPCs, but my playing style gets my rep to low levels far too soon. Is there a mod to block all game reputation changes and the party's rep always stays at a set amount?

Thank you.

I doesn't stop reputation changes, but the "Happy Patch" from The Tweaks Anthology v9
https://www.gibberlings3.net/files/file/973-the-tweaks-anthology/
Does the following.

This provides many options for party unity. First, the player can control party complaints through one of three options:

NPCs never get angry about reputation
NPCs get angry, but never leave
NPCs remain neutral, never getting happy or angry