Quote:
Originally Posted by SteveR
It should be upgradeable. It's a Gen I block with Vortec heads, so cam, heads, etc. should be doable, and you should be able to tune it with the included ECU. I haven't heard either way, but it seems like you should be able to.
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The ECU and tuning are the points of contention from what I hear.
Now I've never done it, and I've never owned one, so take it for what it's worth.