Put a sequential in mine,took six hours in all,had it checked and certified,cost me £50 for the ticket,but well worth it for the peace of mind,plenty of good advice to be found here, best advice...don't just have a go,ask the people who know on this forum,there are some top people on here.. I put an 80 litre tank in the loadspace,in hindsight ,this was a hasty move on my part,I'm now looking to put some under slung tanks in(two 60 litre), don't do rock hopping anymore,so it's a good option for me,lots of options,you have to consider what you require,me? I love the idea of economical motoring in my vehicle of choice,makes you smile when you are filling up with the knowledge it's only costing you half what it did before,without compremising the performance,good luck with your search, Blaze.. the man who can...