That switch should be the same... I don't know if they changed the wiring or not, but my 98 SVT's looks exactly like my 96 GL's did...
I have no idea about the keyless entry. All I've read is that non-keyless entry cars are not wired up the same, so I'm guessing you might have a lot of wiring to do.
I would recommend just buying an aftermarket one if you don't have the factory. I'm assuming you have factory power locks, too. If not, then you will definatly have a lot of wiring to do.
