Sorry, silly me, didn't read properly - although I don't really think the 164 setup is lower overall, it's more like they put the height in a more convenient place for a transverse mount. Of course you could mount intake runners right over the tops of the heads and go for a plenum right off to the side (or dual plenums ... plena?) but I wonder if substantially changing the length of the intake runners would have adverse effects on the engine's breathing.Matt: that's why I was proposing to use the "low profile" intake manifolds from an Alfa 164. Instead of going straight up, the tubes on the 164 curve around, keeping the plenum right on top of the valve cover, which looks like it would be lower than a 4 cylinder.