Yeah, that twin rudder setup looks good on this plane, doesn't it. Let's see, a built-up sheeted stabilizer to increase strength/stiffness, some sort of linkage to join the rudder surfaces... I'll consider it.

Questions- the original rudder is swept back, I assume to add coupling for some reason. So would building the rudders vertical help or hurt flight characteristics? How about size of the control surfaces. I generally can't get enough rudder, so would making them similar in size to the original be too much? I assume that locating them more in-line with the prop wash would only help performance...