Tim; Given the 36mm spacing the choices are somewhat limited. You could have a luthier dowel the existing holes and redrill for 35mm spacing. Having that done would open up all sorts of possibilities. If you would rather stick with 36mm, Rubners would be an excellent way to go.
If you are considering the Rubners, I would suggest contacting Kent via pm. He is a fellow Delcamper & a Rubner rep. He is very knowledgeable, and will go out of his way to help you. Thanks, Bill
More guitars than 1 boy could ever possibly need