I had problems with mine mate couldnt get it to line up think its due to the engine mount bolt being to long seen some people put a few washers to pack the bolt out a bit then it fit fine its up to you if you get one bud
Looking good mate be carefull with that Toyo sports decat mine warped on flange to the turbo ended up changing it for a japspeed one that had been braced. Glad you have the bung now and no worries anything to help out a fellow starleter
Black and brown I don't use and blue is connected to something that has 2 vac lines going to it I'm only useing it's at it messed around with my boost gauge when I took it off