What is the best way of mounting a boot box?
I have cut mine to size but am unsure of the best way to fix it in position. I need it to be removable, for maintenance, so I don't want to PU it in position.
I can't get to the underneath because of the fuel tank so blind fixings are needed. There is not much of a lip on the body work in places so rivnuts are not possible. Self tappers into GRP won't last too long. what other alternatives are there?

I've made some little aluminium brakcets with rivnuts in. These are secured onto the sides so u cant see and then i've just put a couple of socket button bolts through the the top of the box either side.