I made a big mistake when rebuilding this Hydroboost unit. Perhaps I can keep you from making the same error.
Link to PirateJack, my preferred source for Hydroboost Rebuild Kits.
http://piratejack.net/hydro-boost-rebuild-kits/
Here is a link to a video about removing a Hydroboost from a similar pickup (1985 C30).
https://www.youtube.com/watch?v=cjE03_QqNlc
