Don't think the Chassi No has any bearing, it just depends when it was registered. I think most of the last 3200's were made around June / July 2001 at the factory, then it depends on which car was sold when.
Great people to deal with and you are lucky to have them next door.
Speak to them about your new tyres. As Brendan says they do great prices. They matched mytyres.co.uk's price when I put new boots on my QP this autumn, and that was fitted. Had I ordered them online I would have had to schlepp them around to a fitter and pay another ±£10 a corner extra.
Bloody weather, took her out for an hour belt round the country lanes then started to pi$$ down , used my sons snow foam to clean her before putting her to bed , wow she cleaned up well with that stuff