S1000t3 Ecu

Most electrical and electronic parts would be interchangeable ! On similar engined model triumphs ! The variable parts would be , engine balance shafts , cams carburetor jetting/fuel mapping. Many models in Triumphs range share many parts or have differences to make a separate model example Trident's and Daytona , Speed Triples in the 90's.

 

I think the 955's used 2 variants of the sagem either s1000 or s2000 (early models t595 I think) as long as you go with the same variant you will be fine.
just fit it on the bike and load the right map for your bike