EC Carburetors have been the leader in small engine carburation for over 40 years in karting. But to make these carburetors work you need an intake adaptor to replace the stock carburetors. Here you will find many manifolds to adapt different size Tillotson carburetors and slide carburetor to your Honda/Clone/Predator engines ranging from 301 to modified, bored, and stroke big blocks as big as 500cc.