so i have a 02 tundra 4x4, and the load proportioning valve is leaking at the boot and is pretty much rusted to death. dealer wants 200+ so i want to look around a little. so anyways, a guy has one on ebay for much less, but its for a 4x2. is there going to be a difference in the vavle between the two models? any info would be great.

thanks