Circled in red

 

well that's defently not factory looks like your car had a boost gauge in it? start the car up and than put a cap on it and see if the car runs better but its a vacumm line for sure if it doesnt run better than maby its faster =D

 

not sure why it would've had a boost gauge cause it's a 2.8 12v lol. i'll cap it off tomorrow sometime and see what happens

 

keep us informed, i just effin broke that lol