Insert spam reports in Quarantined mails

[Ramprasad]

Hi,
  I am using postfix + Mailscanner + spamassassin on my linux servers. 
Whenever MS quarantines a mail I have no idea from the mail itself why
the mail was marked from spam .. unless I do some  munging with maillog
for that qid. 
Can I configure Mailscanner to insert Spam report headers in all
quarantined mails .. anyway these headers are inserted in delivered
mails.

What will be overheads for such a thing 

Thanks
Ram