You have not seen my manifold Sid !! It's a bit of car exhaust, With a big bend in it !! The E.I. looks super ! Good alloy, Flat slide with float bowl underneath, You adjust mixture by moving the needle up or down, Like a Gardner, No pilot jet. I think they were used on USA motocrossers. What put me off them was I had heard they flood bad when you are at speed, And they did it with me when I was testing on a local motorway at high speeds, The back of the bike was awash with petrol, Not nice, I did a few Road Races with them on my Special, Just befor I built the L/ning, Cheers Bill.