Rick,
yes it looks very expensive but it's not just a cab.
It is a milled aluminum adapter ring plus the crab cap plus anything else needed for the conversion and to get rid of this MSD "Mountain" cab.
For those who want to buy a completed and converted distributor they offer it as assembly in their online shop.
Hawaii Racing - California's Largest Performance Warehouse - Engines, Drivetrain, Motors.
I ordered and received my MSD distributor last year.
Uwe