If you have the rest of the wing ribs that match the one you have against the fuse, I would get the Ziroli plans and build them. Looks like a good fit to the fuse airfoil to me. Bye the way, the PST composite wings, ailerons are hinged wrong to be scale. The full scale bird has top hinged ailerons, the PST uses center hinged ailerons. I didn't change mine, but I wish I would have. Just sayin.............You can check my thread here on RCU: How to detail the PST Panther.