Authentic A-body heater hose
I probably got my Heater Hoses from Frank Badalason's, and Roger Gibsons restorations they weren't cheap, but they do look original.
Part description from his on line catalog:
66-69HH Authentic HEATER HOSE for 66-71; A, B and E body. ………………... $75.00 set Ours is correctly ribbed and styled as original .Others have tried, you will only find the authentic and correct hose here
http://www.rogergibsonautorestoration.com/FileStream.aspx?FileID=1