I have had to re right the book,
After installing the Exhaust manifold with flexible tube it was just not fit the cowl without having to cut around the the flexible tube.



So here we back to the drawing board.
I have made a template of the firewall with some cardboard i had lying around.


I placed the cardboard copy on top off my existing fire wall and rotated it about 6* to the right,
this will hopefully give me just enough clearance so that the exhaust manifold with the flexible tube
will not hit the side of the cowl.

The center hole gave me the exact position so i did not lose the engines center line and the thrust angles.
how i just need to re drill the fire wall and fit the engine and go for a dry fit.