Looking for small block exhaust manifolds

Jake Mead said
Looking for left and right exhaust manifolds for a 74 Swinger. Close to the Twin Cities would be great. Thanks

Does it have 273,318,340 or 360?? Cant use 340/360 manifold on 273 or 318 will cause leaks and burn gaskets out because of the port sizes ? Didnt know if you already knew that