Citroen xzara one are a popular upgrade.
I had the same problem and tried the Xsara jets. These are not adjustable (or at least the ones I got were not). The jet stream hit just below the wiper arms and basically, was useless. I tried various ways of trying to get the washers to hit the windscreen but gave up, went down to Halfords and got some washers jets that fitted and were adjustable.
Avoid the chrome jets you can buy. They look great, but freeze in an instant, even with neat low temp screen wash in the reservoir.
Had to stop and pee on the windscreen on Friday night so I could clear the smeared salt and crud...the jets were frozen solid.