Spooling larger Turbo

So IV got a S475/96/1.32 in the corner, that IV been saving to run with a 62mm as a compound set eventually. I have an opportunity to trade for a S483/96/1.32, to build a larger compound set with

With these 2 turbos having the same size exhaust wheels/housings, am i correct to assume spooling would be the same, just the 83 inducer would just move more air?

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An 83 mm wheel will have more mass than the 75 mm wheel will . It will spool slower now in a compound setup with the proper fueling setup it probably won't really be noticed.

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The 83 will also likely have a larger exducer supporting what badbowtie stated.