Ok so I have had a reply back. Regarding LSD's, this kit comes with their own made diff, although other brands can be used easily enough. Their own branded LSD is of a plated type and I've been told its as good as any other aftermarket diff on sale today. I have also enquired about if the LSD can be removed from the kit to make things cheaper. Warranty side of things covers: Stripping and shredding gears Breaking shafts Partial cover on the dog engagement, this means that improper driving could causes premature wear on the dog clutches and warranty will not cover this. Also any fitment of aftermarket sequential shifters without first measuring to ensure it will work with this kit will not be covered. The good side is that if you are hardcore, they can offer a sequential shifter to work with this dogbox, the price for this shifter is £1015 (depending on exchange rate), the other good news is if you wanted both the dogbox and sequential shifter a 15% discount can be applied. I believe that a dogbox can be used on the road, and is just the same as changing to an aftermarket clutch, you as the driver have to change your driving style to suit the application. Check out PPgearbox (PPG) website and they have a few videos on driving their dogboxes, although for a PPG gearbox you are looking at £5000. If anyone has any question please post them and I shall get them sent over, they are very good at communicating and should have a reply very swiftly. Adam