JeffBlue's number is about right in that 330rwhp is the best reasonable number you could hope for with NA, full bolt-ons, and a very high-reading happy dyno on a really cold day. Assuming you could easily bump the car from a 3.7 to a 4.5, a rough horribly inaccurate estimate would be about 425rwhp (330 * (4.5/3.7)). That's assuming you can get VVEL to play nice with you, but so far it seems to be mostly self-adapting within that sort of power range, given appropriate UpRev tune with a decent timing starting point and fueling. I like the idea of doing that, but I really don't expect it to be cheap or easy on this car unfortunately. It would be simpler and cheaper to slap on an SC setup and just use pulley size and ECU tuning to pick your sweet spot anywhere between around 350-500-ish rwhp.
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