I’ve been putting it off for months but now need to get a 6th seat pronto! Toyed with the idea of swapping the front single for a double but don't like the sound of the smaller/single airbag issue plus having to cut holes in the carpet. The five seats have been leathered up so while a random double would work, it would look a bit odd. I've now decided (I think), to fit a 6th seat in row 3 so I can take it out when it's not needed. I only need it for one or two trips a year but unfortunately, the next one is Saturday the 20th of July and I'm not back in the UK until Sunday so I need a quick turnaround. Questions: Will any single seat work? Drill 8 holes for 4 brackets? Cut the rear mat for the 4 brackets? Do seats come with integrated seatbelts? DIY? On a scale of 1 to 10? Anything else I need to know? Many thanks Brian.