There are a number of ways I'm sure, do some research on the Balsa USA Cubs, or Hanger 9,, they have functional struts.
Basically you replace the lightweight wood with either Aluminum aero-stream tubing or shaped hardwood and engineer some bolt-on attach points.
take a look at the hanger9 Cub manual, starting around page 36
http://www.hangar-9.com/ProdInfo/Fil...nual-LoRes.pdf
good luck