You'll have to measure the inducer and exducer with a digital calipers to know for sure.
"Super 70" is sort of a misnomer since there was never a 70-trim or Super 70 wheel from Garrett. S70 can refer to a couple different wheels sold as a Super 70 upgrade for our cars. From a small T04B or T04E wheel, or even a stock wheel from the Buick Grand National inside a modified stock compressor cover.
That is definitely not a Grand National compressor wheel though. The GN has a 7 blade wheel.
Inducer. About 48.31
Exducer about 60.12
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Attachment 60277
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Attachment 60278
Stock cover left. The one that was on the right
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Yea I saw its definitely not a gn one from the pictures I've seen so far
According to this link, that is the Turbonetics Super 60 wheel you have.
http://fc3spro.com/TECH/TURBO/tmodels.html
Yup that's what I see