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I am not big on Honda engines so I don't really know how much power you will get, but you can expect between 6-10 HP per PSI.
As for the engine, the first thing I would do is have a compression test done to make sure that the engine can even be turbo-charged reliably. When it comes to compression ratio I don't suggest going over 9:1 on a street driven car that will see pump gas. I would keep it between 8:1 and 9:1. If you're currently higher than that then I would get lower compression pistons. With the higher compression the engine will be more responsive out of boost but no amount of tuning will save you from some bad fuel. Besides the advantages of running lower compression overshadow the benefit of running higher compression. Either way I would sleeve the block but you don't have to depending on how much boost you plan to run. I wouldn't run over 6-7 PSI non-intercooled and no more than 10 intercooled without sleeving it.
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