SMALL BLOCK 6 PAK LINKAGE HELP

A friend of mine put on a 6 pak set up on his 340 duster. He is having a hard time finding the kick down linkage. He was told he could use the 440 linkage with some mods. Does anyone have this same set up that can post some pictures of what they have ?
Mancini's has all the linkage you will need.
Hit google/youtube for more linkage tips/setup.

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