I just changed the gears on my car 2 weeks ago since then I have had a bad vibration . I have changed I joints motorMounts transmount and crossmember Bushings . I don't know what else to do can some one help. Thanks in advance
Does it vibrate while stationary or only while driving?
If it's only at considerable speed, the issue might be the stock DS. You can try to index it, or do as many do and get an Alum version. The stock DS's are not balanced all that great and gears get them closer to their critical speed.