I understand on the single carb. On the clifford intakes they are all made to take the 4 bbl carbs & use an adapter plate for all the different mounting bases of the different carbs. Beause of this the top to bottom & front to back measurement of the water & fuel/air chambers likely should all be the same size.
You should contact Langdon & ask if their exhaust will fit with the Clifford intake for your engine as they should know. Clifford could also tell you but they may or may not be more interested in selling you their exhaust.
I would have prefered to use the cast iron fenton exhaust but there was no reasonable modification that would have made those compatable with the Clifford intake manifold short of totally butchering up both manifolds so I took the easy way out with the tube headers.
Jimmie
