First you will need air cleaner bases/tops that will accept the K&N filters. The CB Performance hex-bar linkage for dual Weber IDF's and Dellorto DRLA carburetors is designed to accept K&N filters. Performance is not so much the issue as keeping crud out of the engine, and K&Ns do a very good job without impeding performance. Beware of K&N "look-alike" filter elements that DO NOT do a good job of filtering.