You do know what's good for the goose isn't necessarily good for the gander right??

 

And be streetable? No, probably not. They would have to at least go with more displacement. It would also need head work. The intake spacer probably wouldn't do it, it would need a different intake manifold. If I were going to go this way to get to 350 rwhp, I would also consider upgrading the fuel system as well. The internals would allow a higher rpm limit that would get the top end hp. There would be need for gauges too.

I would guess you're talking about $20k+ for parts & labor.

 

If you want an N/A monster be ready for pay out the big cash for the 3.8 or 4.3 stroker kits and everything else.

IMO it's a waste and you can have a good 350whp daily driver with boost for a lot less. 350whp on the VQ (FI) done right is not hard at all.

 

Too bad no one has ever made some 1/4 mile runs before and after headers to back up the claims of headers greatly increasing mid to top end performance. Every 3rd party dyno I've seen for headers tends to show 5 to 8whp like ttrank posted.

 

That is correct, headers being the only mod shows 5-8 hp gains (some lose power). Me & Vodka were only stating that it is a combination of parts & tune that will allow gains from headers to show. Gotta have more than just headers.