'65 Dart /6 A833 swap - clutch fork, input shaft, speedo gear, crossmember questions

the speedo gear, housing, attachment clip and cable are all different than the 65 stuff. everything changed in 67

check with brewers on the clutch fork or throw up a wanted ad here in the classifieds.

brewers also has a speedo chart on the site that tell you what ya need based on tire height and rear end ratio.

https://www.brewersperformance.com/tech-info/speedometer-gear-ratios/