Looks like it was built from Nick Ziroli's plan. If the firewall is 8 3/4" diameter you can get a nice cowl from Precision Fiberglass. C/G is at the leading edge of the bottom wing to 1/2" back.
http://www.ziroliplans.com/cat_frameset.html
http://www.precision-fiberglass-prod...dex.php?cat=29