I'm going to take a guess and ask are the broken lines anything like this in this post? http://www.allfordmustangs.com/forums/5-0l-tech/115060-1990-mustang-help-identify-broken.html All but one of mine were broke in that photo so if these are the lines you have broken I'd guess it's the one running to the back of the intake manifold. Mine currently runs fine so you should be able to just find a rubber hose that plastic line fits snugly into, and use that to reconnect the two. Now if this isn't the lines your talking about then I don't know with out a picture.