I used a Craftsman 1 11/16 on mine. BTW, with 70K miles on the clock, I had to grind a flat spot and drill a hole in one side of the nut and hit it with an air chiesel to relieve the tension so I could get it off. :{ Broke an 18" breaker bar before trying that. I sprayed the nuts every morning and every night with penetrant for a week before trying it. So buy new nuts from the dealer before you start!
Good luck!
Chris
Seattle