LS cars == Lexus?

My wife has a Lexus, I've actually found it seems like it's not bad to work on, though I haven't had to do nearly as much as I have had to do with my Grand Prix. I'm pretty sure her timing belt is going to need to be changed this summer though, so I might be finding out how good it really is to work on at that point. I'm sure the Lexus and Toyota dealerships will want an awful lot of money for that job, which means I'm going to want to do it myself.