Hi Steve, I'm not too clear on your first question but If you asking about the trans mount or frame horns. The bus and beetle are different but are similar in apearance and both use the beetle type rubber mounts.
The early buses do not use a motor brace as the later 68-71 buses have.
You cant just instal a beetle swing trans and add the reduction boxes or you will have 4 reverse gears and one very short forward gear. You can \"Flip: the ring gear to the other side on a beetle trans and use it with reduction boxes
Geoff.