trying to get some help with converting to electronic speedo. Im buying a 90-93 trans for my 96 200sx with the 2.0. Just trying to see how much im going to invest or should i just got with a cable driven.

you need to buy a b14 tranny, because of the timing sensor in the bell housing. if not you can buy a b13 tranny but will have to swap out the housing. if not you will throw a cel. if you car already has the electronic speedo, then just swap it over to the new tranny.