Hello Skip. Just saw a Moto Lita boss for sale on Ebay.
But when I look at the Moto Lita website; boss application list, it looks like they only deliver boss for non adjustable columns : From the website;
Austin Healey
100/4, 100/6, 3000 with non-adjustable column B6 F
100/4, 100/6, 3000 with non-adjustable column B7*** F