I'll have to see if I can come up with a pic. 318 2bbl linkage comes straight from the pivot to the carb (except for a small downward bend in the middle). The 340 4 bbl style (318-TQ 4 bbl should be the same) I need comes upward (from the pivot) and out closer to the valve cover to work with the wide TQ carb.
Hope that wasn't too confusing,
Dallas