I went to check the PSI on my modulator and was moving the incoming vacuum line to it around and it came lose the coupling on the end is all torn apart. My problem now is i cant find exactly where it went into. The only place i can see without having to take the carb+manifold off would be to a curved metal pipe(maybe 5 inches long) that leads into another plastic line that goes to some sort of sensor by the ABS system in the front? Would i be right in thinking the coupling went into the pipe?

Edit: Not sure how i didnt find it before but there is a banjo bolt off the back on the passenger side of the manifold with a peg for a vacuum line so that seems like the most logical place it could of gone. Also with how easy it came off and how bad the coupling was i think that may be my problem. Im going to fix that and check if not ill replace the modulator and also maybe a "k1 spring kit" i found is a problem for some going from gear 2 to 3. Thanks again to everyone who helped me and hopefully you wont hear anymore from me about this problem .