T-3 Turbo Sizing

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So I am starting this thread to ask those who have run larger framed turbos which one they have used and what they would have done differently to either get better response or more power on the top-end. I have a rather old turbo that I plan on running(650hp capable T3/T67BB, .63ar turbine housing) and I wonder if it will be too laggy or just right even though I never intended to run it on 2.4L engine. I originally intended to run it on a 2.0 4G63 engine and things changed, but my power goals