hydro- boost brake using g-m astro unit

They come from any diesel truck be it GM, ford, dodge and toyota.
V8 Mustangs used them as well. Cant remember what years.
Everyone seems to remember the GM Van's having them in the 90s.

Your brand new diesel trucks still have them.

I had to modify my mounting bracket to fit my dart because the bolt pattern is off a bit. I think every hydroboost unit will need that modification.


Came across one off a 05 Ram that I can pick up. Idea on if they are all the same or what it may be worth?