Mortard, I swapped out the power windows for manual a few years ago just because I liked the roll up look and thought it fit right with the car. There is no kit, just the correct part numbers. It bolts right in.
I got mine from a guy who did the reverse in England, whee the cars come with the roll ups standard except in the highest trim. There are also a few here in the US where the car doesn't have the touring pack, mostly from 2005.
I know most guys think its sacrilege to call the dealer, but that's right where I'd go and find out how much the crank and gear would run. My dealer, Auto Europe, keeps a parts car around too for the little stuff.