Thermoquad throttle and kickdown linkage

The kick down rod needs to be lengthened as well. 22" cable.
If you are using a " High Rise Manifold," Mancini racing has the proper manifold plate you need.
Mancini Racing Throttle Bracket Kit
If it is a factory manifold you will need a factory linkage setup from a 4 bbl intake from a 318/340/360 .
These diagrams are from the Factory Service Manuals. Download one if you don't have one yet. They are very helpful.
Service Manuals – MyMopar

340 THROTTLE LINKAGE.jpg

thermoquad  linkage.jpg

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Pages from 1970-71 Parts Book-2.jpg