The 10.3 pistons are a bad idea. I have not supercharged on them, but I did boost from a turbo on them, and 10psi later I had blown 3 out of 4 pistons within 2 months.
The ringlands on those cast pistons are just too weak. Do yourself a favor and stick with the stock 8:1 or 8.9:1 forged pistons. Once you have a supercharger, you shouldn't need to be worrying about throttle response.
Especially since your going to use the stock GZE ecu, and can't tune your ignition advance... you should stay away from high compression.
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