Came across this photo of an F model, has a one piece belly pan with what looks like some strakes bolted onto it. Looks like two long ones, with two shorter ones outboard, mid way down the belly panel. I think the one closest to the nose gear door is an antenna? Or maybe they all are? Interesting modification, I imagine it would help longitudinal stability a bit, at the expense of a little drag. Anyone have any info on it? Perhaps the owner is even a member here. I'm not to familiar with the old