Cross ram on a Poncho!!
Wedge rudder, works just fine on them! See the right hand cav plate actuator. The braces made of alum would have been added by someone, most I've seen are plywood dropping down to the stringers forward of the kick plate. But then, as I stated they were all made differently. Now, is there a number at the right rear side molded into the glass. After 1973 they should have one.this boat also has in front of the bulkhead has 2 20" wide aluminum braces on each side that run up and down to support the deck