I am an idiot.

I bought a pair of risers before I bought my exhuast without making sure they would get along and be friends! Turns out the round hole style risers don't play well with EMI Thunder manifolds so I now have risers that don't fit.

To tell the truth, I ordered 1 pair of risers, I received 1 pair of pairs of risers, so I have 4 risers all up, all brand new. I believe they are CMI ( I bought them from a supplier) but the box says Custom Stainless Marine all over it! I may be wrong, but they have round inlets and exits with full length jackets and a rectangular flange.

(the pic is of a similar flange to what I need to fit too!)

I need the EMI Thunder risers (SS, not cast!) to fit and I'm more than willing to swap both my pairs for a single pair to suit my manifolds. I think that seems reasonable!

Anyone with a set of risers that'll fit?
Anyone want to swap for mine?