There are two guys in the UK who do them. One in the north and one in south. Think the chap I used was Terry something. This is the link. http://howard-may.co.uk
Essentially, its quite harmless. He looks for the wire which pulses with speed (can't remember its proper name), and puts a wire on it. Finds the throttle and puts a lead to that, and then puts in two switches on clutch and brake.
Fits a stalk to the dash, and job done. Took a bit longer on mine because he had never done the latter Doblo and nothing is marked.
As for £500 - its a tad expensive (although it could be cheaper if you look at his site), but it is so worth it. It gets rid of the awful driving position the Doblo seems to have on long runs.
Its the only thing thats made it possible for me to drive single handed 800 miles in a day. If I didn't have cruise I'd be history at the 500 mile mark such is the uncomfortable driving position.
