Here's a mighty instrument with vast resources. Built by Aeolian-Skinner (1937, 1955, 1965), and rebuilt by Angerstein & Associates (1977), and Letourneau (1995).
The Letourneau project included a new console. This organ is famously too large for its building, and is installed in various remote locations, including the attic. It should be approached as an "organ kit," a huge collection of high-quality pipes and mechanical components, ready to be reconfigured into a cohesive whole in a warm acoustical environment.
The best reasonable offer will be accepted.