The steering conversion uses these components:
MG Midget steering rack – under $300
MGB steerings arms – I bought mine on eBay for $15
2 sets Alpine tie rods from Sunbeam Specialties. The conversion requires only the left side be used.

Dale sells the adapter kit, which he makes, for $275.

Swapping the racks isn’t difficult, the cross member doesn’t have to come out of the car. I had some problems positioning everything back and getting the steering knuckle onto the rack. It all does work without any extra modifications, it just takes some grunting. It also helps to have a friend with you for the extra hands. Bruce