There are lots of Danas out there for sale. Price will vary per year. Around 10500 Hemi Cars built. Around half are 4 speed with a Dana. Almost every 1971 Hemi Cuda with an automatice came with a 410 Dana, 1970 Hemi E Body autos many have danas. How many 440-440-6 six cars came with a Dana in 1970 and 1971. All A12s came with a Dana. Take your time look around buy what fits in your car if you are not in any hurry. If you need it yesterday you will pay full price or have one built.