CurtD,...

I am curious to know where you got the fiberglass cowl for the Dirty Birdy 60 that you are building?? Typically "wood" Dirty Birdy's had wood cowls, EXCEPT for the Dirty Birdy 40 kits which came with glass cowls.

Yes,... my Dirty Birdy is a bit confusing since it has a diferent shape rudder, NO sub fin, as the depth of the fuselage was increased to include the open pipe tunnel.

And yes,... to the best of my knowledge the anhedral stab was a UFO and XLT feature only.

In any case here is what the 91 Surpass looks like mounted inverted in my Dirty Birdy.

Signed,
Steve T.