How to identify turbo type/model?

I drive a 2001 T4 Transporter (75kw, manual trans) and live in veritable TDI desert where T4 owners wave in recognition...
I have read your TDIFAQ page but do not know how to identify my turbo model in order to know which helpful hint applies.

There is usually a placard (label) on the turbo. Sorry, that is the best that I know.

Tony

This link shows what I am referring to.

Tony