I've just been rearranging some paperwork and realised that I've had the Warwick nearly eight years, and I managed to get the Peerless on the road in three. I really am still working on the yellow beast, but a single garage crammed with other stuff means that I need to roll it out to do anything, so progress is pretty slow, and dry days only.
And in my case, other "life changing events" have rather got in the way.
I think that the record probably belongs to Nigel (eleven?) and I'm really hoping not to challenge that. But how long have you had yours?