R33 series 1 and 2 mix up!

[AL R33]

Hi all,

I have been building this r33 for over a year now. Came to me as a damaged rolling shell. I didn’t know much when I started and have mostly used YouTube to figure things out. Was told by parts guys that series 1 and 2 engines/wiring etc was much the same. Have found that not to be the case!! 
My current issue is I have a series 2 engine with maybe a series 1 plenum attached? Found plenum doesn’t have same connections on it as another a spare I have. No connection for hardline that runs from side of turbo around back of block into section under plenum. I’ll post a video. Any help would be appreciated. Thanks