Thanks to the much appreciated good offices of the Brickboard and its denizens I now have a good-enough-for-my-puposes understanding of head and gasket thicknesses and CRs. Now I need to puzzle out the exhaust system for my 544, modest performance B20 for B18 substitution. I'll be using an F head with the exhaust portion of the integrated manifold off a carburated B18 -- 3 studs, 2 ports on the outflow end. To connect to this, which is the better fit in a PV; the dual pipe of the 140 series or the one for the 1800? Or will I have to go for a totally custom set-up?
Bob
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