Performing an engine swap, pulled the engine, found a box which looks like a breather inside the drivers wing. It has 1 pipe going to the filler neck and the other going to the back of the engine. Is it needed? or can I replace it with something a little nicer?

Happy New year to you all! Last night some little **** thought it would be a fun idea to take the covers to my wing mirrors on my Astra H. What a great start to 2017 eh? I've ordered some new covers but they won't arrive for a few days, and its ****** it down outside. My question is should I...

Anyone know where i can buy astra irmscher wing mirrors from ... vauxhall don't do them .. stopped in 2006 :( i really want these more then life it self lol Any help where I can buy them ir if anyone is selling I would be happy :) Thanks Matt