I emailed my SPAC rep for clarification and he said that removal of the language was intended and that, if this is approved, you'll be able to run solid motor mounts if you like. I like my teeth so I'll stick with rubber mounts regardless of which way it goes. For the record, I sent an email in favor of the listing changes and the camber correction rules but against the motor mount rule.
seb@scca if you wish to comment.
DJsilver