s15 sr20de 6spd mt ???

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:flash: need nissan part nbr for ECU for s15 engine (sr20de) normally aspirated, yr 2000 ?
just acquired eng/6spd mt frm crashed s15 w/ less than 3000km
..but no ecu....this dealer has shelves of ecu's but,like me,dosen't
know correct item.
I do hve ecu for Bluebird sss sr20.....can u point me to an
outfit for re-mapping this.....low-budget circuit racing on one-mile
gran prix type track and body used is nissan b310....

rgds link