I have never installed an 040 but was going to at one stage.
Did some research and learnt that the 040 wasnt as good a fuel pump as it could be. So I went for the Tomei.
The 040 dont have a pick-up filter which leaves a decent sized gap from the pump to the bottom of the tank, thus causing surging on cornering and when your tank is low.
The 040 can be mounted with hose clamps to your stock cradle.(as low as possible).
Not too hard just a bit of stuffing around.
Have a browse in the DIY section, its been covered quite well a few times already.