hi trukboy,
Im assuming you have an RS4 that you are trying to make a 260 replica with?
I dont know if a 96 model 260 was ever made, but mine is a 97 model, which branches the gap between the last 33gtr being made and the start of the 34s, mine has parts from both, is a 33 block but the clutch set up is 34, so they definitely made a hybrid unit when doing making the 260.
Where abouts is the number you are looking for? I can see if i can check the computer in my 260 for you.
Your valley cover is a bit intersting having the GTR cover on it as the 260 wasnt released with that cover, not being a gtr of course.