I purchased my pressure hose from Classic Industries. Just make sure that yours is either a flared fitting or an o-ring
one. Mine called for a flare fitting hose end but my OEM factory pump took an o-ring hose. I found out from very good sources that on the assembly line if your pump was not available, they grabbed what was and used that.
As far as engines were concerned, B-body parts could be used on an A-body if it fits. Just to keep the line moving. Speak with their techs to find out which hose type you need, it will save a lot of time.
Degrease everything so you can see exactly where your leak really is coming from.
