it's a kit from DanSTengineering. Steve managed to get me a bit of money knocked off too....
I've not driven it yet as i've not had it mapped. As a daily driver, i can't really say how they would be.

From what i gather, itb's aren't as progressive as the standard setup. I'm also losing the variable runner length from the standard manifold, so might suffer a bit of a power drop lower down.