The last two Eagle trainers I saw were switched to bolt-on. Both had interference between the aileron torque rods and the blocks for the rear bolts. By the time the blocks were ground down and sawn away to make clearance for the aileron controls, there was very little left of the blocks.

I watched the wing bolts pull out of one of these planes, and the subsequent destructive crash. The second plane was sold, don't know how it fared.

My suggestion is to leave the Eagle II as is, and instead spend your time building a plane that was designed for bolt-on wings.

Best wishes,
Dave Olson