I took 2 jets to the Bone Yard (one of which, Ghost Rider, has returned to service). They were stripped down to min equipment required for flight for min crew (all extra ejection seats removed, etc), but MX did not install or swap out any older parts just to send it the Bone Yard.
We still had snow in the wheel wells when we landed in Arizona, so the Bone Yard civilians had a snowball fight before it all melted.