in the process of pullin the manifolds on my 88, i leaned on the "coffee can" vac resivour, and it just fell off of its mount. the bottom of it had completly rusted out, and i see now, was leaking pretty badly. wat should i do now, can i use one of the cheby resivours, the plastic bulb ones, or what?

 

You might get one at a recycling center or you could use any vacuum reservoir the same size or larger.

 

national parts depot sells them also lmc.com

 

they cost about 40 bucks at Ford, and are OK, but you won't get exactly the same vacuum fittings. Anotherwards you'll have to play around with the position of the original hoses.
Ford didn't even supply the mounting nuts for the two studs either.