..Do you guys have a vendor or website where we can take a look at this hydroboost thing? Thanks
Here's one company I hear folks mention favorably
http://www.vancopbs.com/I've dealt with
http://www.hydratechbraking.com/And they taught me a lot and helped put together a system just for my truck.
They have an EXCELLENT FAQ and tech section on the website.
After you know what's going on you may find a used or off the shelf booster is all you need, but if you have any questions or concerns the above folks are a great resource. I've done it both ways, and no regrets spending money with Hydratech for good parts, service, and an education.
Not that I'm advocating this, but here's one electric vacuum pump suitable for brakes, that may not be so expensive used.
http://www.4btswaps.com/forum/showthread.php?15561-Audi-Vacuum-Pumps&p=120908#post120908Grigg