Hi Folks, the folks at Vans RV were very helpful.  It looks like a:

BAF-360                            BAFFLE KIT PP                $275.00

"Trimming the top of the baffle is typical on all engine installations
in any aircraft, but it's not hard to do."

appears to be the correct kit for an IO-360 B1F parallel valve engine.
Thanks to all those who responded.

Doug