If you need mesh for grills etc it's available from B n Q but get the alliminium, it's easy to shape,cut, etc,
The side cutting isn't really a problem but it's Deffo a case of measure, re measure, measure again then cut,
It will need to be on air to pull it off really well I like the arches kit but I don't like the front bumper, can't believe the guy in the video didn't cover anything up best of luck mate