If memory serves me correctly, Ford had different covers that went on top of the tranny that screwed to the floor pan. For shifting on the tree, the hump had a lower profile, but when shifting on the floor, it rose up to accommodate for the linkage.
I found this site that lists the hump covers, but the detailed description shays they're for Chevys even though the brief description has them as Ford. Bear in mind, I've only used them for pricing, I do not know their reputation.
https://c2cfabrication.com/store/adv...oor+shift+hump