Hi Pete,
I also have a series and I had similar problem when trying to fit. See attached pickie of my arrangement.
As you say the front hole lines up with the spring bolt forward. There was no natural hole for the back one in my chassis. I got round this by welding a plate to the bracket which I bolted to my winch bumper. Hope this helps but looks like you may have to get the black and decker out after all.
Best of luck.
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