Questions from a Newbie

New to the truck, 2011 4x4 TRD Off Road V6 Manual Trans, 334 miles. I love the truck so far, but I need to lift the front, who's idea was the factory rake anyway? I know that this subject has been covered and I've read many of the posts. I'm thinking Bilstein 5100's all the way around. I know that a diff drop isn't necessary with the 5100's but is it helpful to do it anyway? Does anyone know about any warranty problems that can come from these modifications?

 

some dealerships are ok with light mods and and some will say lift and bigger tires willvoid all warranty talk to a couple of sevice managers and see what you could get away with.