I was able to get a tight enough right angle bend by using the spring bender, the type that slides over the tubing and distributes the pressure so that it doesn't kink. I put the brass fitting in a vise, pushed the spring bender along the tube up against the fitting, and carefully bent the tubing as tight as I could. It just fit. The ling heads back along the frame rail until it passes the hydrovac, does a 180° turn back to the hydrovac with a 4 inch diameter bend. It takes about 34" of tubing if anyone is curious.

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1948 Chevy 2-Ton