Quote:
Originally Posted by 1969K10
It is my understanding the the closed knuckle drums were 67 thru early 69. Then they went to open knuckle with drum for late 69 & 70. Then 71 and on is open w/ disk.
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Hit it right on the mark---
AND on the 3/4 tons 71 was the year that they went to 9/16'' wheel studs