Over the years, I've seen primarily 2 methods of wing attachment for jets. I'm to the point in a scratch built turbine project that I need to make a decision which method to use, and I'm seeking input about the 2 methods.

One is aluminum spar and a bracket in the fuse. Avonds F-15, and Byrons style for example.

The other method is the tube within a tube, as seen on many 3D craft and the BVM King Cat for example.

I've got about 1.5 inches to work with for wing thickness, and as far as the fuse goes, I've got about 6 inches of depth, before I'll run into the tailpipe area, thus if I use a tube within a tube, it CANNOT pass all the way through to the other wing. I can place formers wherever needed for either method.

Any thoughts?
Any thoughts for vendors of either wing attachment method?

Thanks,
Lance Campbell