I actually worked with Classic Dash on the development of this product. I furnished them a complete dash to do the design work. Yes you do have to cut the metal structure to make it work. I can post a picture of the dash showing the modifications that will have to be done. This installation...
dorman Compression fitting 785-306 Summit # RNB785-306
You should be able to go a good hardware store and purchase a 5/16 copper tubbing compression fitting to splice tubing together. That would give you compression nuts and compression sleeves you need. The radiator and the transmission should...