Wanted: Pipe Augmentation; used PDI organ

In the past (80's, 90's for sure...), Rodger's offered pipe augmentation as a special purchase option - in many cases, supplying the pipes, chests and finished cabinet components as needed. I've been able to acquire two ranks of these products and am looking for more - anyone know of any available? I would be interested in discussing the opportunities.

I own a Rodgers Classic Concord 760 which I purchased new 20 years ago - still a wonderful instrument but "the grass is definitely greener" with the PDI products and later - looking for any pointers towards used Rodgers organs which might be offered, particularly in the southwest.
--Sam Vause
(Chandler, AZ)
Rodgers Classic 760 Concord w/ 2-ranks Pipe Augmentation
PR-300
MX-200