So you want the IFS rear end right?
I am cofused at what you are trying to do. Are looking for a direct repacement housing for your 99' Taco or changing housings all together. I am going to assume that you got a smoakin' deal on a e-locker center section and want to stuff it under your truck. Is this correct?
Thanks but I don't think that will work. My search tells me I need '99-04' Tacoma TRD 8.0 E-locker. The open diff housing can be modified to accept the E-locker third member but I'd prefer not to have to do that if possible.