the 273 club

Does anyone have a picture to show the difference between the 63 and 64 firewalls to clear the distributor for a v8? I have a 63 Dart and would like to see how big the dimple in the firewall is to allow a v8 to fit my car. I hear it doesn't take a lot of room but I haven't seen the difference between the two to judge what the clearance needs to be. If anyone has pictures of both or just the 64 I can compare it to mine.