My newly purchased 1970 U-code Cuda has its original intake and Carter AVS carb. However, it is missing the correct throttle return spring and kickdown spring. I have looked online. For the throttle, some vendors offer a 33 coil and others a 45 coil spring. I have found one version of the kickdown spring and am unsure if it is correct. The only reference I have is the article by Tom Shaw at Hot Rod magazine. It features an un-restored 68 GTX with a 440:
https://www.hotrod.com/articles/engine-details/. Would a 68 and 70 440 have the same springs? I have attached two pictures of my Cuda. The third picture is the from the Hot Rod article showing the linkage and springs on the 68 GTX.
David