Well, back in June 2016, they "shopped" around and I wound up with 4 total pulls (3 on Experian and 1 on TU):
Good luck on getting that LX570 - nice SUV!!!
BTW, if you have the Lexus Pursuits Visa (Comenity), they allowed up to $5K of your payment (add-ons, service contracts, etc.) to be put on the card.