T3 Highflow Compressor Housing

[FOG35]

Hey guys and girls,

I am trying to work out what compressor housing is on my turbo.

On the Turbotorque id tag it says, p/n : T3 High Flow

s/n : TT0659 --- (does this mean anything?)

On the front of the compressor housing it says GARRETT and SFB.

The compressor housing has be polished so i think there may have been other writing on it but has been grinded away.

When i bought the car it came with the turbo and i was told that it was a R33 II highflow.

The reason i think the compressor housing is something different is because where it says garrett is different to other r33 turbos ive seen.

Ive measured the inducer diameter and it it slightly above 56mm. Is there a way to measure the exducer without taking the turbo apart/off so i can work out the trim.

I'll try to add a pic later on today.

Thanks

Dean