RB25 Bottom end knock

[rolex]

So got a rb25 in my r32, bottom ends knocking, Wondering if anyone can tell me what exactly it is weather it be a bearing or? Im on a tight budget so i want to try get out of this as cheap as possible with a rebuild.. What do you guys think id be looking at for a rebuild and would a workshop tell me to rebuild the whole thing or just replace whats stuffed?video below thanks 

[jmknights93]

Wow .... 

[Ben C34]

It's pretty obvious that's an engine out job. If in budget get another cheap running engine and Slap it in.