Is a bootlid of a blobeye with a circle lock interchangeable with a bootlid with a square lock. Is fitment the same and can the boot locks (circle and square) be changed?

 

If You after round lock on square hole or square lock on round hole as far i remember locks can not cover holes if putting this way.
Narrow track boot lid could be put on widetrack,You need to swap widetrack hinges to narrow track bootlid.