The way I look at it, if you have a big bore, that will accomodate the bottom end for you and I'd go with a lower numbered cam. The lower the number the higher the RPM power range but you lose it on the bottom end....unless you accomodate the bottom end with something like a bigger bore. I'd look at an A9. Maybe Tom can chime in since he has likely tested these setups out in detail.
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