I have a late 31 s/w indented firewall.The body looks like a Murray but there is a Briggs tag on the fire wall under the tag with all the patent numbers.The fellow who sold it to me said it was a Briggs and he does judging at the national meets. I was also told that in the very late production 31 S/W Briggs had the same look as Murrays . What do I have a Murray or Briggs ? Any help solving this mystery is appreciated . Thanks