quote:The Kaase manifold is very similar to this Morrison intake.
...but they are, in fact, different manifolds! Comparisons are meaningless.
Also, you can actually pick up the phone and buy a Kaase/Borla manifold. The last person I heard that sent a deposit to Morrison for a manifold, waited for two years, then asked for their deposit back. They're still waiting.
If I'm not mistaken, the IR manifolds Kelly Coffield cast a few years ago, have thick enough runners to enlarge to 55mm. I have one and so does Dan Jones. Both of us are using 55mm TB's, which the manifold was designed for.