I'm spoiled by my Prius. all the windows switched, on every door, has full auto-up/down. Now it bothers me when I use my wife's car and I have to hold the buttons to get her windows up or down (and they are soooo slow)

i know the xj6 has the driver window auto down. Is it the switch, or is it an array of other components that make it auto down? I'm sure it would be easy to retrofit the passenger front, since right hand drives would have any extra components to fit.

Both, I want to make the all auto up/down. Any thoughts?

Thanks!