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First off, welcome to the board. You guys have some nice rides, for sure....
As far as the throttle linkage that setup would use a rod with a 90º bend on the carb end and threaded on the other end with two nuts and a piece that fits into the arm that comes up from the firewall. That is for adjustment.
Here are a couple of pictures and a link to a thread with some pics. I think the rod is on backwards in the thread....
http://67-72chevytrucks.com/vboard/s...d.php?t=282859
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