OK thanks, that clears it up, so P01 can mean different actual generations of boards, and I must have an 896 not an 0411.

This brings up a question re my 2000 Camaro PCM, which according to the hptuners scanner is a P01 (it says "ECM: 10, VPW - P01"). This is the original PCM that came with the car (which I bought new...