I am pretty sure (anyone out there correct me if I am wrong) There are no numbers on the trans that will match up with the Vin. The motor number has its own tag to ID it with the car, but not the trans.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .