How to ID a TA-49 ?

[KrisR]

Hello all,

I just purchased an '86 T-type from a boardmember, and he says it has a TA-49. I know this is a 'stock-appearing' turbo, but is there any way to identify if it is indeed a 49? Not that I don't believe him, but it would be nice to be sure for ordering other parts, etc.

EDIT: previous owner also called it an ATR Stage 3A turbo.

Thanks!
Kris