To stick w/ a budget: send out the stock IM & TB for a quality port job @ places like wilson/maperformance etc. What ever you decide, you should do the IM & TB next, b/c w/ your set up you have already reached your goal of 500whp on pump, now it's time to make it a little more efficient.

 

I think porting anything stock is a waste of time and money because 90% of people will turn around and upgrade to a "real" manifold then the money you spent on the port would have been a waste. Also the TB is not needed. We have plenty of 35r 600hp pump cars on the pump gas running the Magnus V5 on just stock TB. Also upgrading to a 70mm tb won't help you very much unless you upgrade to 3" piping but I would never do that on a street car, jmo

Mikey

 

well ive been doing my reading and i am going to go with the intake manifold first ive seen post of them doing back to back test and the manifolds dropping boost and them having to add fuel thats a good sign so now all i have to do is pick one there is a good amount of people running the magnus v5 but i also have seen a few test with the ams f1 and the drivin innovations piece .