This is a kit that's the same as mine (I don't have any pics of mine with me).
I thought long and hard about which supercharger I should fit to a grey motor and decided that it had to be one that was period correct, freely available for FKs, and able to be completely kept under the bonnet.
Judson made one for the Chev Corvair that has a 140ci motor (pretty close to our 138ci greys). The carb sits neatly behind the supercharger and comes with its own compact air cleaner. The Corvair is a flat 6 so it has that long inlet pipe to feed the other 3 cylinders. I'll use this outlet on the manifold to fit the pressure-relief valve instead and just open up the other outlet so that it flows better through the single remaining outlet.
I figure I can't go too wrong because it's an entire kit that was proven to work well on 140ci motors.
I'd love to have had a Norman, but a). Couldn't find one, and b). Couldn't afford it even if I did! I'm dead jealous of yours
Kinda hijacked your thread there! Sorry about that
