Fitted defender steps (the squarer ones) on my S3 - fit into existing floor fixing holes but had to drill a hole in the chassis to support the weight - luckily where the bolt fixing is there is a hole in the chassis to tighten the bolt. Look much better than the half round ones. Like these with e Land Rover logo in the rubber: http://www.ebay.co.uk/itm/defender-side-steps-/302420027646?hash=item4669a368fe:g:gLwAAOSw3FNZlyPn