Nice! And welcome. I'll be watching this one! I'm guessing the art Morrison frame will solve a few issues fitting the 5.7 in the d24. I've got a 48 d24 2dr sedan keeping it stock for the time being. I also have a 58 Plymouth I put a 5.7 with a NAG1 in. Still working on it.
Are you going to run a carb or FI? What controller if you go FI? How about a picture of the interior.....What transmission you going with? Keep us posted! Looks like it will be quite a project and will be a lot of fun when done!