I have been on the phone to ashley exhaust 2 weeks ago getting some pipes made up and flanges made up as well.
well they all turned up last monday and i got to work making the manifold.
in all it took me about 12hrs to do it all. but there is so much difference in the car it pull so much smoother.
just to let people know its on a 2.2 (z22se) astra so the manifold is at the back of the engine so its a nice tight gap to work it.
How it all come to me.
Let me know what you think