anyone has done or know what would i can do to convert my rear diff to an lsd or positraction for my 93 mazda b2200. please help me out.

 

you need a differential from either an RX-7 or Miata that has LSD, depending on which car and year you find it from it will require different things to make it fit. Some bolt right in, others require some swapping. I think with all of them you need to lengthen the axel by 1/8"