Someone on here must have an angle grinder you could borrow, it would make much, much neater job of it.
As for he holes, do you have holes already then ?? just to small ??If they are in the right place you could always ship into the hole with tin snips and fold back (fold unerneath) the sections to make a bigger hole.
As for he holes, do you have holes already then ?? just to small ??If they are in the right place you could always ship into the hole with tin snips and fold back (fold unerneath) the sections to make a bigger hole.