Vintage Air ac question, Heater Hoses

[snappytravis]

I installed my vintage air system on my 69 camaro and ran the hoses through fresh air hole. Then drilled four holes in the firewall. I am now thinking about installing a bulkhead and changing from crimp style hose ends to ez clips.. I saw a post that I can't find that had an fittings to the heater core. They had brass adapters I believe 37 degree in the ends of the heater core so the an fittings would seal. Can someone tell me where to get the fittings that go in the heater core ends?
What ac hose did you use for the ez clips, I see there is a hose that is more flexible that the stuff that comes with the stock vintage air kit. I was trying to eliminate having a bulkhead for the smooth firewall look but realize what a pain it will be to service if I don't put in the bulkhead.
Live and learn I guess.
Thanks Travis