are all hydroboosts the same?

[novaderrik]

i finally found a place that sells a rebuild kit for the leaky hydroboost in my 84 Buick Regal T Type. but they only list one kit for hydroboost with no specific models listed.
so, are they all pretty much the same, and is a home rebuild something that is easy to do?
and, yes, i know that i can just get a reman unit from NAPA or Uutozone or wherever- but being the broke cheap ass car guy that i am, i'd prefer to do it myself and use the $50 i save to buy other things that the car needs.