A bottom end built like Fort Knox also aides the LS in ability to make power reliably. The biggest advantages I see in power production would be sequential port fuel injection and coil near plug ignition. getting timing dead nuts and fueling exactly what is specified for all scenarios really helps tame the street drivability of an engine that could otherwise be considered more of a track build. All of this can be accomplished on a Pontiac build with some $$ and enginuity, and with heads that will flow enough to feed the power level there shouldn't be anything holding you back until you make enough power to stress the block into literally breaking. general consensus is maybe 600-650 on a stock block.
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