R34 Afm Same As R33 S2?

[Alien]

Hey guys

Could somebody please give me the Part Number (model number) of the R34 GTT AFM? I bought a R33 S2 AFM (supposedly (from wrecker)) and have dropped it in the R34 GTT and my dynotuner is saying its a RB20 afm.... but how is this possible if it fits in properly and connection socket is the same?

I can't find my original R34 AFM so I need the part number to make sure the one I have in the car now (the supposedly R33 S2 AFM) matches the R34 AFM part/model number.

Any help much appreciated.

Thanks in advance