Been reading up on this too, as I get ready for a BBK on my car. Dave gave me the heads up on the 4runner MC application too, and I noticed in searching that there are ABS and non-abs models of 4runners. Some models are 2wd, others are 4wd. FWIW, I think I am going with the 4wd, ABS, application for the 4runners. I believe this gives me the 1 & 1/16" diameter cylinder, and correct orientation on the brake lines. Please correct me if I'm wrong. Thanks!