Didn't want to go go too far off track with the Hydroboost questions so here's a new thread.
The whole Vanco kit involves grand cherokee rotors and calipers, but then I did a hydroboost on a CJ7 and that thing locks the brakes with ease running 35's and the stock front and rear brakes
Nope, no GC brakes, just the HB, lines, proportioning valve, master and pump. It's $$$$.
Sale Price: $620.00 for the HB II with lines. No MC though. That's $85 extra... They don't want you to use your stock YJ or TJ pump though.
I know the Astro's used it but never really looked further. So all you'd need is the master, and new lines then? A Booster from an 2001 Astro 4.3L is $283 +$35 Core. Master is another $100...