Aston Martin has just released details of the last 40 Vanquish supercars it will ever make. The special editions will go by the rather apt name 'Vanquish S Ultimate Edition'. They'll each be sold with semi-aniline leather upholstery, black chrome interior trim, a personalised sill plate, and the option of 'ultimate black' paintwork and, says Aston, 'will be available by special request to customers wishing to celebrate the last of a significant car in Aston Martin's history.'These special Vanquish models will also be the last Astons to be finished at the marque's Newport Pagnell assembly plant. They will be identical in all but colour and trim to standard a Vanquish S, which means they get the same 520bhp V12, and the same 200mph top speed. They'll also be sold for the same £182,095 price tag as a Vanquish S; Aston is anticipating that all 40 will be gone within a few weeks.After Vanquish production has finished, Newport Pagnell will continue to be home to Aston's Works Service Department, which also makes an important announcement today. As of this week, the outfit is offering a manual gearbox conversion for every one of the 2000-plus Vanquishes that have been sold by Aston Martin since it launch in 2001. For £15,570, Aston Works will remove the Magnetti Marelli six-speed paddlshift gearbox from your Vanquish and replace it with a conventional six-speed stick-shift and a clutch pedal - a modification which may well be attractive to owners of the very earliest Vanquishes, where paddleshift 'boxes were known to cause reliability problems.