I'm waiting for the SUpercharger kit to come out, as it will make more power, and cost about a $1500 more than the 250hp kit. should make 300-310hp as this is what the NA motor has been dynoed at on low boost.

I know tvt has pushed the 3.2 up to 270hp from what I've read. but they spent a lot of money to get there.
to make 300 NA hp, after an ecu tune will cost you about $3500, maybe more, because the cams for the m112 are very pricey, and I've seen headers for this motor cost $2100. not too mention they are ver rare to find when available.