Welcome from Texas, if you can afford the car buy it. It will give you untold enjoyment tooling around Europe in an American vehicle. When my wife and I were on Poland Christmas a year ago, I saw only one American car in the 16 days we were there.
X2 on those air cleaners. A good friend and I were out in his Henry J and the car back fired causing them to catch fire. It was a PITA to clean all of the debris out of the engine.
Welcome from another Texas, there are a few FABO members up in the DFW area. Look into the Mopar Mini Nationals that will be around somewhere around September of this year.
Welcome from Texas, you are going to find that the 63 firewall is going to interfere with the distributor. When I put a 273 in my 63 Dart, I used a 64 K member and a bit of sledge hammer surgery to get the clearance I needed.