Upgrade cams or port intake/exhaust manifolds?
 

Im running E85 in my Evo 9 MR DD pushing about 430hp on a BBK Full. I want a little more power and I'm at the point where any little gains will cost a few hundred dollars. Thus should I upgrade the cams (and if so which company and degree?) or should I port the intake/exhaust manifolds? Porting the manis can give me more than 40hp but only on the mid-high side. People say you should wait until you're ready, whatever that means. Upgrading the cam would improve low-mid end as well as high, right?

I know that either mod would change the way the car sounds. Cams give that racecar sound while porting manis give a deeper tune. I thank you in advance for your input.

I have all the above and my car doesn't sound like a racecar at all sounds stock and that is with GSC S2 cams. Cams would help with the mid and high yes down low not so much, porting would help quite a bit with the setup for sure and mine as well put a 65mm tb in there as well.

Cosworth cams. Porting is mean though!

Porting will be much cheeper then doing cams. but maybe not as big of gains. no need really to do the intake manfoild at this time

I'd do the porting first since you'll get nice power gains, but no ill-effect on drivability which cams will have.