OK. I'm an FI idiot. I know this and accept it.

You always hear T3 and T4 thrown around (sometimes by people who have no clue). When you look at a turbo housing, you usually see something like " TB0344" or something.

How do you go about decoding this into usable info? This would make it easier when going into a junkyard to get a turbo. All I know is I'm looking for one off of a Saab/Volvo/SVO/Turbocoupe, but I'd still like to know a little more.

I've found plenty of theory of operation, but nothing as simple as decoding.

Thanks,

-P Roth
'92 GS