Ask Autosport, who most likely posed the question!
From back in the prologue, Toyota was only 4kmh down on Porsche's top speed. They were also one of the first to do a 1:39. I dont know if Toyota is keeping their cards close. Apparently they made a very low drag car that wouldnt work so good at Spa. But Anthony also said its a package thats designed just for LM. Those two things give me confidence they should be a lot more competitive. I think every car from the current 3 will be under 3:17 or 3:16. I hope Nissan is there in the sub 3:20's.