Those PE flats will add a lot to the wheel wells. I like working with those sorts of PE, even if you did have to do a bit of surgery to make 'em fit.
I was wondering today how you'd fix those extra holes. I never think of plugs and would have made a putty mess. Good thinking.
Nice scratching on that control yoke, or however we call it. Thinking about, it's sort half between a stick and a yoke, so I'd venture to guess it was the predecessor to the panel-mounted yoke?