94 astro van I believe. The master cylinder is from a 96 Camaro. I have front disk, rear drum brakes and never used any aluminum plate adapter. go to the junk yard and get your hydroboost. they easy to rebuild and it will save you.
Hey Mopardemon, last question, I promise! What power steering pump did you use? Interested to know if you modified your existing pump for return line(s) or purchased something like a Borgenson Saginaw pump? Have a great weekend!