LandZZZ

I want to replace certain parts from USI-LS mod with my own models I designed. How should i do it?

I am just dumb. Direct link from github: 1.5.1 - 1.7.3, 1.8.1 - 1.9.1

I want to install Principia, but I can't figure it out. Yes, I looked on Github, but it just doesn't work for me. I play on 1.7.1 and I am too lazy to reinstall all mods, so I'm sticking with that version. I am completely confused from the C++ too, because I am an amateur Java dev. Edit: nvm I am just dumb.

I am not new, I just can't remember password to my account. OK, I will ask there

I am trying hard to install Principia for 1.7.1. But I can't figure it out. Why 1.7.1? Because I do not want to reinstall all my mods again. Thanks for Response.