Kickdown linkage

I'm not sure if this is the right place for this or not but...
1972 Dodge Dart Swinger
318 w/ a 727 tranny

problem, can't find kickdown linkage that will work.
I have tried modifying(bending) the one i have and I've got it to where it will fit and shift but it shifts high and downshifts high.

I would kind of like to stay with the linkage type rather than go to a cable system.
Anybody know where I can get one that should work for this car?
Or does anybody have pictures of one that should work, so I can compare it to mine.

Thanks