Projects '39 chevy brakes

Hi All, I've been trying to post this thread but it doesn't seem to go through.
I've decided to put a hydro boost brake booster on my '39, but i need to ask the experts a question. I picked up a hydro boost assembly at my local junkyard for $60 with the pedal and mc. It fits great under the floor if I turn it upside-down. I need to know if the hydro boost will work that way. The booster came out of a chevy van and it has 3 ports in it. The routing is as follows; 1) from the steering gearbox 2) to the steering pump 3) to the ps tank. My question is, does port 3 need to be up to keep the internals full of fluid or is it just a pressure relief drain line?

Thanks
Paul

 

There we go, I wasn't using a prefix.

 

Not to hijack ur thread but theres a parts car here local if you need sheet metal. Looks like ur good from ur avator. Just a heads up if u need it

 

I have seen it done a few times and found this link that talks about it
http://www.turbobuick.com/forums/threads/hydroboost-mounting-upside-down.336325/

 

doesn't matter how its oriented. they will work upside down just fine.

 

Thanks all