Hydroboost help locating parts

[Blkt6]

I was going to convert my 87 powermaster to 85 hydroboost. Seemed like a simple bolt in. I am having a hard time locating the hydroboost unit. Sold out everywhere (even Rock Auto).
I heard a unit out of an Astro van works. What year specifically should I use.
Then what power steering lines work, Buick or Astro
Thanks

 

[TURBOELKY]

http://www.turbobuick.com/threads/hydroboost.437153/

 

[TexasT]

What are you searching at rockauto? They appear to have the hydroboost in stock for about $110 and a $20 core charge. I hit it into the cart and it was $12 to ship.
Search under 1984 Buick Regal with the vin 9 turbo 231.
I used a Cadillac master cylinder, and the hoses for the 84 Regal. Bought a Tee, and some trans cooler hose local to fan the return. Also bought a flare wrench to get the lines off the steering box and pump. I thing it was 17,18 or 19mm but I don't recall. I cam look if you like. Just had to "massage" one of the lines for the pump. Did a lot of "bleeding" of the power steering and brake systems. Working well so far(been a couple years).

My thread.
http://www.ihadav8.com/forum/index.php?topic=4228.0