got some new spark plugs and leads and wana change them but i see you got to take the upper inlet manifold off. i see the bolts that hold it to the lower manifold and the 2 at the back is there anymore plus wen i go to put it back is there a certain sequence you have to put them back and whats the torq setting for wen i bolt it all back down again and can i re use the gasket again or wud it be advisory to get another cheers