The thrust line on this kit runs from F1 through the fuse to the exact corner of the empenage at the base of the vertical fin (mounting point of the tail wheel). Again, this will only raise that line about a 1/4" through the entire fuse without any change inlength on the plans. This is not being built as a airbatic (citabria) aircraft. I will be flying this bird in its the most docile regime due to its importance and scale. authenticity.