I've been wondering which version of the Magnus SMIM I have for over 2 years and I got some pics of the velocity stacks to see if anyone would know the difference. I read about the 1st version being a flop and making less power than the stock manifold and the 2nd version making some decent numbers.

The 1st pic is of the type of manifold I have.

 

its not just the velocity stacks that change n depict what manifold you have its the overall plenum size/shape it looks like just the normal street manifold

 

On the first run of the Magnus SMIM the velocity stacks weren't blended into the plenum either. Looks to be as you said, later version street SMIM.

 

I'm positive there's no major differences in the 2 versions of the manifolds I have pictured, just the velocity stack design.



Thanks for the good news. My next major mod will be an upgrade to a V5 when I'm ready.