I have a copy of the invoice from SAI for CSX3020 from when Jack owned the car. TX George is now the proud caretaker. It has a dry sump kit listed on the invoice with numerous other items.
Dry Sump Kit $554.00
Labor was also listed for install of the accessories.
I have read 3002 had the dry sump installed after some trackside running via Bob B. Maybe by the time they made 3020 they figured why not?