First off b16 on a ls is a no no .. at least i would not do it, they are geared too short.. if i was doing the swap i would be looking for a gsr lsd.. that should make it a bit more fun and challenging..

As far as the ecu goes, all you need is a ls manual ecu and you will be fine or chip the one you have now.. ether option is ok, but its best to go chipped and tuned for best results..

as far as the tranny goes, any hydro b series tranny will fit from 92-00..

so start swapping that teg man.. good luck..