https://originaltrilogy.com/topic/Project-4K80-a-WIP/id/63909
There is a invite code for SWT forums in this post
https://forums.thestarwarstrilogy.com/threads/you-need-to-register-before-you-can-see-these-forums.115/#post-9927
There is also a code posted in this thread on SWT forums (no registration needed to view this page)