Thanks all--for the advice.

I took another look today and saw a hole approx. 4-5 cm in the center of the cast manifold (although not part of the exhaust channels) it looks still sealed.
I'll check with the saop thing later.

I'm going to buy FLYBOY'S PORTED headers anyway for a good deal. I justy hope the stock gasket will fit <img src="/forums/images/graemlins/zombie.gif" alt="" />