I have the D452 on my RB and they are very close to the Pitman arm. I had to remove the grease fitting to get the clearance I needed. A low deck will probably move the tube even closer to the arm. twocents

Gus twocents

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60