read your warranty and contact the service manager (the person that runs the shop) at the toyota dealership you do business with. Tell him what you would like to do, and ask him if this poses a problem with your warranty.

if you break suspension parts, they probably will not cover it. If your engine pops, they should cover it. Under the magnusson moss act, dealerships must prove that the aftermarket part is responsible for the failure in order to void warranty work. As nice as that sounds, some dealerships try to get away with whatever they can, so know what your talking about.