All 95-97 SRs had lockers and all had 59 width. Now, 95-96 had 4.636 axle ratio and 97 was 4.272. Same for 98-99 but not all had lockers. X is rear leaf springs right? So It might be easier to get axle out of Montero Sport. All of pre 2000 were leaf with ether 4.636 or 4.272 (for bigger 3.5L 9.5" ring gear) both of those were also available with lockers on some models. 2000+ 3.0L Sports got coil springs but 3.5L stayed with leaf. No selectable lockers there but some were equipped with very good (possibly best in class) Hybrid LSD. On plus side they all had 4.9 axle ratio.