63-66 A body V8 drop center link

haole said
I installed a 73 slant six motor into a 66 Dart..................

The V8 centerlink is a good idea. Take a look at this info from slantsix.org:
http://www.slantsix.org/forum/viewtopic.php?t=33217&highlight=early+oil+pan Lots of good info.