They may possibly fit, however dont quote me on this.
One other important factor is that the kits are made to the specification / weight of the car - the passat coilovers may fit, but may not be sprung for the correct weight.
If you dont drive your car "hard" then you will probably get away with it, but if you do and the suspension is oversprung and not damped correctly it could spell disaster if your giving it the beans on a country road for example.