The walker part number is 45951. I have not bought this part in a few years but a quick search on google had many to choose from. Jegs $44.99, Summit $39.97, And Rock auto said in was stocked in an outlying warehouse and would ship in one day $40.79.

67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
2012 Ram Crew cab 5.7 4x4