Morris Minor Owners Club

I am trying to change the oil in my diff ,1964 Minor 1000, and cannot find anything to fit the drain plug and level plug square hole. I have tried my 1/2 inch and 3/8 drives but it is between the two., any ideas where I can find the appropriate spanner.

Did you mean Boot or bonnet ? I put the boot lid type on which fits in the groove on the car ( not the boot lid ) and find the boot difficult to close as it doesn't seem to compress well enough to get the lock to make properly. Any advice ?