ha I thought that’s where the breather would normally go, the dipstick wouldn’t bend easily to fit original place so chopped a bit old ally front floor up for the bracket, I never chuck things out, used a couple more pieces off floor to repair both rear wing bottoms.
Just starting to come round to the idea of clear outs now I’m retired and got more time
Ah but hours/days or weeks after you throw it out, guaranteed you wll need it!