We have new dash covers for 1968 and later cars. They replace all the vinyl and padding on your existing dash, and you will re-use your metal "skeleton". These are pretty low tech on the install, but very time consuming. You need to line up the gauge openings pretty accurately and cut them out after the glue is set. the 453-815 is for Manual choke, 453-816 for auto choke.
Hope this helps!