The Aliens Vs Predator: Requiem (Unrated) [spoRv] BD-25 RELEASED is a good place to start my friend 😃
There is an An Index Thread (and more) for Preservation of Other Properties… thread which list nearly all the projects, and some relevant discussions threads for that category, on this site.
The ‘How do I do this?’ on the OriginalTrilogy.com - some info & answers to members’ queries also has some helpful and useful information too 😃