Notice how the floorboards have 2 ways to "collapse". First is the retained original movement in the arm. Second, the choice of floorboards that have their own hinge too. So, 2 safe ways to give in when turning hard.
These are Chinese parts that were donors. You can also find these a-plenty on AliExpress, no need to use Amazon. I generally buy from Ali myself but I found that Amazon that ships sooner had comparable pricing to Ali, so I went with these on Amazon.
This is the the middle "extension" that allows to position floorboards lower (to allow the boot to go under the speed selection lever): https://www.amazon.com/dp/B0DXKK6CQP
These 3 products are of the same "system" and fully interchangeable in parts. Thus, not "close enough" or adjustment, etc, they fit like a glove.
Before my biggest hurdle was how to lower the floorboards, as without any sort of lowering the boot would not safely fit under the speed selecting lever.
I know I used a wrong shoe type for the pic, the only one I had handy at the time of taking pics. But as you can see, the clearance seems to be good enough (pictured shoe is US size 11).