Are your windows standard fitment or after market? Would your mate be willing to let you prise the switches out of the dash so you could have a look at the connectors on the back?
you can use ANY switches you like in theory from a car down the scrappers as long as they physically fit where you want to put them, just make sure you cut the plugs and an inch or so off the wiring loom from the donor car, that way you can crimp/solder the wires into your loom and use them!