The company I mentioned was CPP -Classic Performance Parts. This should link to the Saginaw kit on their website. If you search their site the Toyota steering box option is there too.

There's a photo here of the Saginaw steering box installed on my truck.

Stuart.

1950 Chevrolet 3100 (occasionally working) truck:https://c2.staticflickr.com/6/5490/30684982201_6dc479d18d_c.jpg
1928 Chevrolet AB National Phaeton: https://c4.staticflickr.com/6/5573/30137792083_42886d30a4_c.jpg
1932 Austin Special Sports: https://c8.staticflickr.com/6/5793/30116567183_1520e67c4d_z.jpg