this is my second portal map it is short though and the portal gun isnt needed in the whole thing but pls enjoy
you need the portal gun mod for this
you also need the portal resoure pack link:http://www.planetminecraft.com/texture_pack/precisely-portal-and-modified-portal/
 there is a bug though wich is when wheatly asks you to go through a door only 1 block will move so you will have to break your way through sorry for that