Hello, its been a long time. Had to shelve project for 5 years. I am having a little conflict with my power steering pump id tag. I have a 1970 Shelby gt350 built in Dearborn June 12 of 69. One online chart lists HBA BR 1 for 69, 70 Mustang and a rebuilder restorer online says ALL 351W cars had an HBA BK pump only 390 came with HBA BR. Can you help?