Very cold @ night this year. The temp drops rapidly as soon as the sun sets. And with the fire restriction this year, make sure you have adequate cold weather sleeping bags or layers of clothing.
As bigMike mention...bring extra fuel for that V6 of yours....I never need to carry the extra jerry can. My 3RZed 86Runner is a gas saver. Topping off @ Shaver, I can get thru the whole trail and all the way back to the parking garage in Merced with just that tank of gas. Have fun on the trail and post some pics when you get back!